Work, Energy and Power - Solved Test Series, Questions Bank for NEET, AIIMS, JEE Main and Advanced, NEST, Admission Tests

India Study Solution - Physics Guide 

Work, Energy and Power

In continuation of Test Series Set 1 (Q. No. 1-10) and Test Series Set 2 (Q. No. 11-20), here you have carefully selected 10 MCQ practice questions with hints & solutions (given at the end) from the Physics chapter - Work, Energy and Power.

Syllabus for IITJEE, NEET:                                                                      
Work done by a constant force and by a variable force, Unit of Work, Energy and Power, Work Energy, Theorem. Elastic and in-elastic collisions in one and two dimensions, Notions of Work and Energy, Law of Conservation of Energy, Potential and Kinetic Energies, Gravitational Potential Energy, and its conversion to Kinetic energy, Potential Energy of a spring. Conservative and Non-conservative Forces, Different forms of Energy, Three types of Equilibrium, Mass-Energy equivalence. Power.   
Solved MCQ Test Series – Set 3 (Q. No. 21-30)
Question 21: A particle is projected at 60O to the horizontal with a kinetic energy K. The kinetic energy at the highest point is,  
a. K     b. Zero
c. K/4  d. K/2  

Question 22: Two springs with spring constants k1 and k2 (k1 ¹ k2) are extended by the same force. If their elastic potential energies are U1 and U2, then, U2 will be -

Question 23: A particle of mass 0.1kg is subjected to a force that varies with distance as shown in the adjacent diagram. If the particle starts its journey from rest at x = 0, its velocity at x = 12m will be -
a. 0 m/s           b. 20√2 m/s  
c. 20√3 m/s     d. 40 m/s  

Question 24: A ball released from a height 20m, hits the ground and rebounds to a height of 16m. The percentage loss of energy during collision is, 
a. 20%  b. 40%  c. 25%  d. 75%.  

Question 25: A block of mass 50kg is projected horizontally on a rough horizontal floor. The coefficient of friction between the block and the floor is 0.1. The block strikes a light spring of stiffness k = 100N/m with a velocity 2m/s. The maximum compression of the spring is,  
a. 1m    b. 2m
c. 3m    d. 4m  

Question 26: A uniform meter scale of mass 2kg is suspended from one end. If it is displaced through an angle 60O from the vertical, the increase in its potential energy is,  
a. 4.9J   b. 9.8J   c. 9.8√3J   d. 4.9(2 – √3)J  




Question 27: A rigid body of mass ‘m’ is moving in a circle of radius ‘r’ with a constant speed ‘v’. The force on the body is mv2/r and is directed towards the center. What will be the work done by this force in moving the body over half the circumference of the circle.





Question 28: A ball ‘A’ is released from rest when the block ‘B’ is on the ground (see adjacent fig.). For the block ‘B’ of mass ‘M’ to remain in contact with ground, the minimum mass of ‘A’ must be -

a. 2M     b. M
c. M/2    d. None of these.  

Question 29: A body of mass 1kg is thrown upwards with a velocity 20ms–1. It momentarily comes to rest after attaining a height of 18m. How much energy is lost due to air friction? (g = 10ms–2)  
a. 20J    b. 30J
c. 40J    d. 10J  

Question 30: A ball is released from certain height and rebounds after hitting the ground. If it loses 50% of its KE on striking the ground then it will attain a height again equal to -
a. one fourth of the initial height
b. three fourth of the initial height
c. half of the initial height
d. none of these.  
 Work, Energy and Power  - More Practice Questions, Test Series 

<<Previous (Q.No 11-20)                                     (Q.No 31-40) Next>>

NEET 2019 Alert: 86 Examination Centres changed by NTA, check and download revised Admit Card

 
Update 04-May-19: National Eligibility cum Entrance Test, NEET 2019 has been postponed for the state of Odisha. It is confirmed. Students may please note that NEET 2019 examination has been cancelled for the examination centres in Odisha. The schedule for the NEET 2019 examination for all the other state, however, remains unchanged. For official notification visit ntaneet.nic.in. Students may please note that only the exam has been cancelled only for the centres in the state of Odisha. In case a student for Odisha, who is not currently in Odisha and has a centre in any other state, the examinaton would be conducted as per the schedule - which is tomorrow. 

Posted 03-May-19: 
India Study Solution EduNews - representative image
Yesterday, National Testing Agency (NTA) has released an important notice regarding the National Eligibility cum Entrance Test or NEET 2019 examination centres.
As per the notice, due to the General Elections to Lok Sabha and other unavoidable circumstances, some 86 examination centres have been changed by NTA. The revised list has been released on ntaneet.nic.in.
All students are advised to check and confirm whether he/she has been affected due to this change and accordingly download their revised NEET 2019 Admit Card from ntaneet.nic.in now.
Students who have been affected by the change are being informed via SMS, email or voice message by appropriate authority. The admit card link is still active. NEET 2019 is scheduled for this Sunday – May 5, 2019.
Article continues after Ad




Students may please note that candidates would not be allowed to enter wrong examination centres nor would they be allowed to enter with old admit cards. Hence all the students appearing National Eligibility cum Entrance Test  2019 are advised to please check the revised list of examination centres provided in the NTA official notice by clicking on the link given below and accordingly download their revised admit cards for  NEET 2019. 

Diversity in The Living World, Biological Classification: Solved Test Series with MCQ Objective Questions for NEET, Medical Entrance Exams, Tests

Biology Solutions, Solved Test Series, Questions Bank (Practice Questions) for NEET, AIIMS, NTA, NEST

India Study Solution - Biology Guide
Here you will get very important and most carefully prepared 10 MCQ objective questions in our each Biology Test Series with hints & solutions (given at the end) from the various topics of the unit: Diversity in The Living World - Biological Classification
All these are typically important questions for NEET-UG, AIIMS, JIPMER, COMEDK, MBBS Admission Tests, Medical / Dental Entrance Exams, NEST and other such competitive exams.


The Living World and Biological Classification
Solved MCQ Test Series – Set 5 (Q. No. 41 - 50)

Question 41: In Whittaker classification, algae are included in how many kingdoms
a. 3    b. 2    c. 4    d. All the five kingdoms

Question 42: ‘Taxon’ is the unit of
a. Order    b. Taxonomy    c. Species    d. Genus

Question 43: Protists having non-contractile pusule are
a. Sporozoans    b. Ciliates    c. Dinoflagellates    d. Navicula

Question 44: The stage in which the viral genome gets integrated with the bacterial genome is called
a. Prophage    b. Provirus    c. Adsorption    d. Lysogeny

Question 45: Spicules of class calcarea are –
a. Calcium carbonate
b. Silica
c. Spongin fibre
d. None
Questions continues after Ad -





Question 46: Which is not a category?
a. Phylum    b. Species    c. Poaceae    d. Class

Question 47: Organism which are found in fresh water as well as in marine environment, they are microscopic and float passively in water current (plankton). Most of them are photosynthetic. The cell form two thin overlapping shell, which fit together as in a soap box.
Organism which possess above character are
a. Dinoflagellates    b. Chrysophytes    c. Diatoms    d. b and c both

Question 48: Kingdom Monera was established by
a. Dougherty    b. Copeland    c. Stanier    d. Heckle

Question 49: The symmetry found in mollusc is:
a. Bilateral    b. Asymmetrical    c. Biradial    d. Radial
(1) a and c    (2) b and c    (3) d and a    (4) a and b

Question 50: Which organisms are not included in the five kingdom system of classification?
a. Protozoans    b. Viruses    c. Lichens    d. Both b and c

India Study Solution
Biology Solutions for NEET, AIIMS, JIPMER, Medical Entrance Exams
Biology: The Living World and Biological Classification
Answers of MCQ Objective Test Series – Set 5 (Q. No. 41 – 50)

Answer 41: (a).   Answer 42: (b).   Answer 43: (b). Answer 44: (d).   Answer 45: (a).   Answer 46: (c).Answer 47: (b).   Answer 48: (b).   Answer 49: (4). Answer 50: (d).



Structure of Atoms - Solved Test Series, Questions Bank with Hints and Solutions for NEET-UG (AIIMS, JIPMER), JEE Main (IIT), BITSAT, NEST

Structure of Atoms | Atomic Structure

Solved MCQ Test Series for NTA-NEET, JEE Main & Advanced, IIT, AIIMS, JIPMER, WBJEE, BITSAT : Structure of Atoms (Atomic Structure)
Here you get carefully prepared another Set of 10 MCQ practice questions (Q.No.31 - 40) in our each Test Series with hints & solutions (given at the end) from the Chemistry chapter - Structure of Atoms.
Go to previous Test Series:

Practising with our test series questions will certainly enhance your level of confidence for NEET-UG, JEE Main & Advanced (IIT) AIIMS, JIPMER, COMEDK, WBJEE, MBBS Admission Tests, Engineering Entrance Exams, NEST and other such competitive exams.

Syllabus:
Sub-atomic Particles; Discovery of Fundamental Particles; Cathode Rays; Positive Rays; Rutherford Model; Moseley Experiment - Atomic Number; Isotopes and Isobars; Concept of Shells and Sub-shells; Electromagnetic Radiations; Emission Spectra; Hydrogen Spectrum; Atomic Models; Bohr’s Model of Atom; Sommerfeld’s Extension of Bohr Theory; Dual Nature of Matter and Light; Heisenberg Uncertainty Principle; Wave Mechanical Model of Atom; Concept of Orbital; Quantum Mechanical Model of Atom; Shapes of s, p and d Orbitals; Pauli’s Exclusion Principle; Aufbau Principlr; Hund’s Rule of Maximum Multiplicity (Orbital Diagrams); Electronic Configuration of Elements; Photoelectric Effect; Nuclear Stability; The Whole Number Rule and Packing Fraction; The Magic Numbers.  
     
ISS Chemistry Solutions: Atomic Structure | Structure of Atoms
Multiple Choice Questions (MCQ Test Series) – Set 4 (Q. No.31-40)

https://www.indiastudysolution.com  image
Question 31: Among the first lines of Lyman, Balmer, Paschen and Brackett series in hydrogen atomic spectra, which has higher energy?
a. Lyman
b. Balmer
c. Paschen
d. Brackett

Question 32: What will be the longest wavelength line in Balmer series of spectrum?
a. 546 nm
b. 656 nm
c. 566 nm
d. 556 nm

Question 33: If the electronic configuration of nitrogen had 1s7, it would have energy lower than that of the normal ground state configuration 1s22s22p3 because the electrons would be closer to the nucleus. Yet 1s7 is not observed because it violates:
a. Heisenberg uncertainty principle
b. Hund’s rule
c. Pauli’s exclusion principle
d. Bohr postulates of stationary orbits

Question 34: Calculate wavelength of 3rd line of Brackett series in hydrogen spectrum












Question 35: The ratio of 2nd, 4th and 6th orbits of hydrogen atom is:
a. 2: 4: 6
b. 1: 4: 9
c. 1: 4: 6
d. 1: 2: 3

Question 36: Among the following which one is not paramagnetic? [Atomic numbers; Be = 4, Ne = 10, As = 33, Cl = 17]
a. Ne2+
b. Be+
c. Cl-
d. As+

Question 37: The first use of quantum theory to explain the structure of atom was made by –
a. Planck
b. Einstein
c. Bohr
d. Heisenberg

Question 38: Total number of spectral lines in UV region, during transition from 5th excited state to 1st excited state
a. 10
b. 3
c. 4
d. Zero

Question 39: A helium molecule is moving with a velocity of 2.40 x 102 ms-1 at 300k. The de-Broglie wavelength is about
a. 0.416 nm
b. 0.83 nm
c. 803 Å
d. 8000 Å

Question 40: Which of the following does not form a part of Bohr’s model of hydrogen atom?
a. Energy of the electron in the orbit is quantized
b. The electron in the orbit nearest to the nucleus has the lowest energy
c. Angular momentum of the electrons in the orbit is quantised
d. The position and velocity of the electrons in the orbit cannot be determined simultaneously

India Study Solution - Solved Chemistry Objective Test Series
Atomic Structure (Structure of Atoms)
Solutions of Multiple Choice Questions Test Series (MCQ) – Set 4 (Q. No. 31 – 40)
Answer 31: (a).   Answer 32: (b).   Answer 33: (c).   Answer 34: (a).   Answer 35: (b).   Answer 36: (c).   Answer 37: (c).   Answer 38: (d).   Answer 39: (a).   Answer 40: (d).


Atomic Structure | Structure of Atoms - More Practice Questions 


<<Prev (Q.No 21 - 30)                   (Q.No 41 - 50) Next>>


Check Chemistry Guide for JEE Main & Advanced (IIT), NEET (AIIMS, JIPMER), NEST, MBBS Admission Tests click - 

Work, Energy and Power - Test Series and Practice Questions with Hints, Solutions for NEET (AIIMS, JIPMER), JEE Main, JEE Advanced (IIT), NEST

Work, Energy and Power

Solved Test Series for NEET, JEE Main & Advanced, IIT, AIIMS, JIPMER, WBJEE : Work, Energy and Power

Here you get carefully prepared another Set of 10 MCQ practice questions (Q.No.11 - 20) in our each Test Series with hints & solutions (given at the end) from the Physics chapter - Work, Energy and Power.


Practising with our test series questions will certainly enhance your level of confidence for NEET-UG, JEE Main & Advanced (IIT) AIIMS, JIPMER, COMEDK, WBJEE, MBBS Admission Tests, Engineering Entrance Exams, NEST and other such competitive exams.

Syllabus :
Work done by a constant force and by a variable force, Unit of Work, Energy and Power, Work Energy, Theorem. Elastic and in-elastic collisions in one and two dimensions, Notions of Work and Energy, Law of Conservation of Energy, Potential and Kinetic Energies, Gravitational Potential Energy, and its conversion to Kinetic energy, Potential Energy of a spring. Conservative and Non-conservative Forces, Different forms of Energy, Three types of Equilibrium, Mass-Energy equivalence. Power.   
Solved MCQ Test Series – Set 2 (Q. No. 11-20)
Question 11: The potential energy of a particle varies with distance ‘x’ as shown in the graph below.
India Study Solution - https://www.indiastudysolution.com

The force acting on the particle is zero at -
a. C         b. B
c. B & C  d. A & D

Question 12: A box of mass 1kg is pulled on a horizontal plane of length 1m by a force of 8N then it is raised vertically to a height of 2m, the net work done is,
a. 28J    b. 8J
c. 18J    d. None of the above

Question 13: Two bodies of masses m1 and m2 have equal momenta. Their K.E. are in ratio -
a. √m2 : √m1   
b. m1 : m2
c. m2 : m1
d. m12 : m12




Question 14: The potential energy of a long spring when stretched by 2cm is ‘U’. If the same spring is stretched by 8cm the potential energy stored in it is -  
a. 4U    b. 8U
c. 16U  d. U/4

Question 15: Work done by frictional force is always -
a. zero             b. negative
c. positive        d. may be either positive, negative or zero

Question 16: The relationship between force and position is shown in the adjacent figure. The work done by the force in displacing a body from x = 1cm to x = 5cm is,
India Study Solution - https://www.indiastudysolution.com

a. 20 ergs    b. 60 ergs
c. 70 ergs    d. 700 ergs

Question 17: When momentum of a body is increased by 200%, its kinetic energy also increases by -
a. 200%      b. 400%
c. 350%      d. 800%

Question 18: Velocity - Time graph of a particle mass 2 kg moving in a straight line is as shown in figure. Work done by all the forced on the particle is -  
India Study Solution - https://www.indiastudysolution.com - diagram

a. 400J
b. – 400J
c. – 200J
d. 200J.

Question 19: A spring of force const 800 N/m is extended by 5cm. The work done in extending it from 5cm to 15cm is -   
a. 16J     b. 8J
c. 32J     d. 24J

Question 20: The average power required to lift a 100kg mass through a height of 50m in approximately 50 seconds would be -
a. 50J/s    b. 5000J/s
c. 100J/s  d. 980J/s

India Study Solution
Physics Solutions for NEET, JEE Main, IIT, AIIMS, JIPMER
Work, Energy and Power
Hints / Solutions of Physics MCQ Test Series – Set 2 (Q. No.11–20)
Answer 11: c. (dU/dx = 0 at B & C). Answer 12: a. Answer 13: d.
Answer 14: c. Hint:













Answer 15: d. Answer 16: a. Answer 17: d. Answer 18: b.
Answer 19: b.
 







Answer 20: d.
(Hint: Average Power = (100 x 9.8 x 50) ÷ 50 = 980 J/s)

 Work, Energy and Power  - More Practice Questions, Test Series 

<<Previous (Q.No 1-10)                                     (Q.No 21-30) Next>>

For complete Physics Guide for JEE Main & Advanced (IIT), NEET (AIIMS, JIPMER), NEST, MBBS Admission Tests click - 
Recommended Study links