## Electrostatics : Physics Multiple Choice Questions with Hints and Solutions for JEE, NEET, MCAT

Electrostatics

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### Physics Multiple Choice Questions with Hints and Solutions for preparation : Engineering (JEE), Medical (NEET), MCAT (Medical College Admission Test)

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Welcome back to your own site India Study Solution @www.indiastudysolution.com

Here is your next Test Series a set of 10 most important solved questions (Q. No. 41-50) for NEET, MCAT and JEE from Electrostatics in Physics with their hints & solutions.

Click to check NEET and JEE Main Syllabus for chapter Electrostatics.

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### Electrostatics  India Study Solution Test Series – Set 5 (Q. No 41-50)

Question 41: Two electrons separated by distance ‘r’ experience a force F between them. The force between a proton and a singly ionized helium atom separated by distance 2r is

a. 4F

b. 2F

c. F/2

d. F/4

Question 42: A positive point charge Q is kept (as shown in the figure) inside a neutral conducting shell whose centre is at C. An external uniform electric field E is applied. Then:

a. Force on Q due to E is zero

b. Net force on Q is zero

c. Net force acting on Q and conducting shell considered as a system is zero

d. Net force acting on the shell due to E is zero.

Question 43: Electric potential at a point P, r distance away due to a point charge q at point A is V. If twice of this charge is distributed uniformly on the surface of a hollow sphere of radius 4 r with centre at point A, the potential at point P now is

a. V

b. V/2

c. V/4

d. V/8

Question 44: If E is the electric field intensity of an electrostatic field, then the electrostatic energy density is proportional to:

a. E

b. E2

c. 1/E2

d. E3

Question 45: An Î±-particle is accelerated from rest through a potential of V volts. Its final kinetic energy is

a. 2 eV

b. 1 eV

c. 4 eV

d. ½ eV

Question 46: When a body is earth connected, electrons from the earth flow into the body. This means the body is initially

a. Unchanged

b. Charged positively

c. Charged negatively

d. An insulator

Question 47: An object is charged with positive charge. The potential at that object will be -

a. positive only

b. negative only

c. zero always

d. may be positive, negative or zero

Question 48: An electron enters into high potential region V2 from lower potential region V1 then its velocity

a. Will increase

b. Will change in direction of field

c. No change in direction of field

d. No change in direction perpendicular to field

Question 49: The work done in slowly moving an electron of charge e and mass m from A to B along a semi-circular path (as shown in the figure) in vertical plane in the field of charge Q is

a. -2 mgr

b. –Qe/r

c. 2mgr + 2Qe/r

d. Zero

Question 50: Four identical charges +50 Î¼C each are placed, one at each corner of a square of side 2m. How much external energy is required to bring another charge of +50 Î¼C from infinity to the centre of the square?

a. 64 J

b. 41 J

c. 16 J

d. 10 J

India Study Solution Test Series
electrostatics
(Prepare for JEE, NEET, MCAT)
Hints and Solutions of Physics Electrostatics MCQ Test Series – Set 5 (Q. No.41–50)
https://www.indiastudysolution.com

(Hint: Force on Q due to E is QE and not zero. Force on Q is zero due to E & electric field of induced outer charges on sphere. Charge density on inner surface is not uniform therefore net force on charge Q is not zero. Due to E, net force on shell is zero because net charge on shell is zero.)

Electrostatics: More practice questions
(Q.No. 21-30)                                     (Q.No. 51-60)  Next >>

## NEET, JEE, MCAT Preparation | Solved Questions Bank, Test Series, Notes on Electrostatics, Physics chapters

Electrostatics

### India Study Solution MCQ Test Series with Hints and Solutions

JEE, NEET, MCAT (Medical College Admission Test)

Hi Guys,

Welcome back to your own site India Study Solution @www.indiastudysolution.com

Here is your next Test Series a set of 10 most important solved questions (Q. No. 31-40) for NEET, MCAT and JEE from Electrostatics in Physics with their hints & solutions.

Click to check NEET and JEE Main Syllabus for chapterElectrostatics.

Friends if you have not subscribed us yet then you are missing many important things. Plz do subscribe India Study Solution (free, Subscribe button given in the sidebar) before you forget so that you get information through mail in your inbox whenever we publish anything of your interest.

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Alternatively, you can Bookmark this site for timely updates on India Study Solutions, JEE and NEET syllabus, Notification (NTA circular etc.) posted in our EduNews section.

So, friends without wasting further time let us start -

Electrostatics

India Study Solution Objective Questions Test Series
Set 4 (Q. No 31-40)

Question 31: Consider the situation of figure (29-Q3). The work done in taking a point charge from P to A is WA, from P to B is WB and from P to C is WC.

a. WA< WB< WC

b. WA> WB> WC

c. WA = WB = WC

d. None of these

Question 32: When a glass rod is rubbed with silk, it:

a. gains electrons from silk

b. gives electrons to silk

c. gains protons from silk

d. gives protons to silk

Question 33: Two point charges of same magnitude and opposite sign are fixed at points A and B. A third small point charge is to be balanced at point P by the electrostatic force due to these two charges. The point P -

a. lies on the perpendicular bisector of line AB

b. is at the mid-point of line AB

c. lies to the left of A

d. none of these

Question 34: In a certain region of space where electric potential is constant, the magnitude of electric field is

a. Also constant

b. Positive

c. Negative

d. Zero

Question 35: Relative permittivity of mica is:

a. one

b. less than one

c. more than one

d. infinite

Question 36: Potential due to a charged conducting shell varies as inversely proportional to the distance from its centre at

a. Inside the sphere

b. Outside the sphere

c. Only outside the sphere

d. Does not vary like mentioned

Question 37: The electric field above a uniformly charged non conducting sheet is E. If the non-conducting sheet is now replaced by a conducting sheet, with the charge same as before, the new electric field at the same point is:

a. 2E

b. E

c. E/2

d. None of these

Question 38: The wrong statement about electric lines of force is

a. These originate from positive charge and end on negative charge

b. They do not intersect each other at a point

c. They have the same form for a point charge and a sphere

d. They have a physical existence

Question 39: A negative charge is placed at some point on the line joining the two +Q charges at rest. The direction of motion of negative charge will depend upon the:

a. position of negative charge alone

b. magnitude of negative charge alone

c. both on the magnitude and position of negative charge

d. magnitude of positive charge

Question 40: If we move in direction opposite to the electric lines of force:

a. electrical potential decreases

b. electrical potential increases

c. electrical potential remains uncharged

d. nothing can be said

India Study Solution Test Series

electrostatics

(Prepare for JEE, NEET, MCAT)

Hints and Solutions of Physics Electrostatics MCQ Test Series – Set 4 (Q. No.31–40)

Answer 32: b (Hint: When we rub glass rod with silk, excess electrons are transferred from glass to silk. So, glass rod becomes positive and silk becomes negative).

Answer 33: d (Hint: There is no point near electric dipole having E = 0).

Electrostatics: More practice questions

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

## JEE Main, JEE Advanced 2021 exam dates, other important announcements made including some relaxations in eligibility criteria for admission in IITs

9-Jan-2021

Update 18-April-2021:

JEE Main 2021 JEE Advanced 2021 - Exam Dates, Eligibility Criteria and Other Important Changes

• JEE Advanced 2021 exam will be organized by IIT Kharagpur and held on July 3, 2021.
• Until 2020, students were required to score either minimum 75% in Class 12 Board Exam or be among the top 20 percentile in their board exams, in addition to qualifying the IIT Advanced exam, to get into any of the 23 IITs. From 2021 this eligibility criteria of 75% marks in Class 12 Board Exam has been removed for the convenience of students.

• On December 16, the education minister had announced that the JEE Main 2021, conducted by the National Testing Agency (NTA) will be held four times a year in February, March, April and May. The first slot of JEE Main is from February 23-26, 2021. The next sessions of the exam will be held between March 15-18, April 27-30 and May 24-28.

• Students will be given a choice to answer 75 questions (25 each in Physics, Chemistry and Mathematics) out of 90 (30 each in Physics, Chemistry and Mathematics). Merit list/ranking will be prepared based on the best score of the candidate.
• Here this can be recalled that JEE Main is the exam for entry into undergraduate engineering courses. Those who will qualify in this exam can appear for the JEE Advanced which is the entrance examination for admissions into the IITs. The examination will be held in 13 languages including Hindi, English, Bengali, Assamese, Marathi, Tamil, Odia, Telugu, Kannada, Urdu, Malayalam, Punjabi and Gujarati.

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Friends, Plz feel free to ask and let us know if you have any query, doubt regarding NEET or JEE in the comment section below.

## Will NTA conduct NEET twice a year | How many times one can appear in NEET

26-Oct-2020

### Doubts, Confusions about NEET (National Eligibility-cum-Entrance Test)

Will NTA conduct NEET twice a year ?

How many times NEET exam is held in a year ?

Will neet be conducted two times in 2021 ?

Please be informed that till 2020 NTA used to conduct National Eligibility-cum-Entrance Test (NEET) once in a year with more than 71,000 undergraduate seats i.e. MBBS admissions across the country.

However, MBBS admissions in AIIMS and JIPMER which until 2019 were done through their own separate exams will this year be based on NEET 2020 scores followed by counselling. Implementation of the NMC Act and cessation of both AIIMS MBBS and JIPMER MBBS exams have created a greater demand for NEET which may ultimately force to conduct the NEET examination twice a year in future. NTA has already received various proposals and suggestions that the exam be conducted twice a year.

AIIMS MBBS was tougher than any other medical entrance test in India. To maintain the standards of the Institution, NTA has been advised by several experts to focus on the pattern of the NEET question paper. Expecting an increase in the difficulty level of the examination, various student bodies have requested NTA to increase the frequency of the examination to twice a year, like JEE Main, to enable them to pick the best score of the two exams.  So, there are some discussions and planning going on at primary level and frequency of NEET may be increased to twice a year from the academic session 2021-2022 for which the confirmation is yet to come. However, this would be possible only after the final nod from the central health ministry.

Nevertheless, there would be certain benefits as well as difficulties of conducting or appearing NEET twice in a year. (If you want to know about this, please let us know in the comment section. We can discuss about the various pros and cons of having NEET twice in a different post).

Is there any restriction of number of attempts in NEET exam ?

How many times one can appear in NEET ?

There is no such attempt limit in NEET till 2020, only age limit is applicable.

NEET Eligibility: Are Private and NIOS Candidates eligible to appear in NEET exam conducted by NTA ?

Please comment and let us know if you have any query, doubt etc.

Study Materials & Test Series with Hints and Solutions (Absolutely Free)

## Solved Test Series, Practice Questions Bank for JEE, NEET | s-Block Elements | Alkali and Alkaline Earth Metals

### s-Block Elements (Alkali Metals, Alkaline Earth Metals)Chemistry India Study Solution Test Series

Preparation guide for NEET, JEE Main, JEE Advanced, IIT, AIIMS, NTSE | Engineering, BDS, MBBS Admission Test

# Hello Friends,

Welcome back to your own site www.indiastudysolution.com

Here we bring you a new Set-4 (Questions 31 - 40) of practice questions from chemistry test series, s-Block Elements or Alkali Metals (Group 1 elements) and Alkaline Earth Metals (Group 2 elements).

Each set comprising 10 MCQ objective questions with hints & solutions (given at the end) from our Chemistry Solutions exclusively from Group-I and Group-II elements of Periodic Table.

In each set you will find a combination of typically important some basic and also advanced level questions helpful in confidence enhancement during preparation of NEET-UG, JEE Main & Advanced (IIT) AIIMS, IMS BHU, JIPMER, COMEDK, MBBS Admission Tests, Engineering Entrance Exams, NEST and other such competitive exams.

Find NEET and JEE syllabus of s-Block elements or Alkali Metals (Group 1 elements) and Alkaline Earth Metals (Group 2 elements)

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Chemistry Practice Questions: s-Block Elements

(Group 1 Elements: Alkali Metals; Group 2 Elements: Alkaline Earth Metals)

India Study Solution MCQ Test Series – Set 4 (Q. No 31-40)

Question 31: Which compound is highest covalent -

a. LiCl

b. LiF

c. LiBr

d. Lil

Question 32: Ionisation potentials of alkaline earth metals are -

a. less than alkali metals

b. same as that of alkali metals

c. more than alkali metals

d. equal to zero group elements

Question 33: On combustion in excess of air sodium mainly forms -

a. Na2O

b. Na2O2

c. NaO3

d. none

Question 34: Which of the following has largest size in aqueous solution?

a. Li

b. Na

c. K

d. Cs

Question 35: Which one of the following is the correct statement?

a. Beryllium exhibits coordination number of six.

b. Chlorides of both beryllium and aluminium have bridged chloride structures in solid phase.

c. B2H6.2NH3 is known as ‘inorganic benzene’.

d. Boric acid is a protonic acid.

Question 36: Lithopone is a mixture of -

a. barium sulphate and zinc sulphide

b. barium sulphide and zinc sulphide

c. calcium sulphate and zinc sulphide

d. calcium sulphide and zinc sulphide

Question 37: Reaction of Cl2 with hot and conc. NaOH produces

a. NaClO

b. NaClO3

c. NaClO4

d. NaClO2

Question 38: Epsom salt is

a. MgSO4 : 7H2O

b. CaSO4 : H2O

c. MgSO4 : 2H2O

d. BaSO4 : 2H2O

Question 39: Suspension of slaked lime in water is called -

a. quick lime

b. milk of lime

c. lime water

d. washing of lime

Question 40: H2O2 → H2O + O2

a. Oxidation of H2O2

b. Reduction of H2O2

c. Disproportionation of H2O2

d. Acidic nature of H2O2

India Study Solution - Hints and Solutions Chemistry MCQ Test Series

s-Block Elements

(Group 1 Elements: Alkali Metals; Group 2 Elements: Alkaline Earth Metals)

Solutions of Chemistry Test Series (MCQ) – Set 4 (Q. No.31–40)