NEET Physics: Questions 351 - 356 of 2098

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Question number: 351

» Electrostatics » Capacitors

MCQ▾

Question

parallel plate capacitor of plate area A and plates separation distance d is charged by applying a potential V 0 between the plates. The dielectric constant of the medium between the plates is K. What is the uniform electric field E between the plates of the capacitor?

Choices

Choice (4) Response

a.

E=KV0dϵ0A

b.

E=ϵ0CV0KA

c.

E=V0KA

d.

E=V0Kd

Passage

A sphere of radius R contains charge density ρ (r) = A (R-r), for 0 The total electric charge inside the sphere is Q.

Question number: 352 (1 of 4 Based on Passage) Show Passage

» Electrostatics » Gauss's Law

MCQ▾

Question

The electric field inside the sphere is

Choices

Choice (4) Response

a.

12Q2πR2(13(rR)14(rR)2)

b.

12R2Q(13(rR)14(rR)2)

c.

120Q5ϵ0R2(13(rR)14(rR)2)

d.

3Qπϵ0R2(13(rR)14(rR)2)

Question number: 353 (2 of 4 Based on Passage) Show Passage

» Electrostatics » Gauss's Law

MCQ▾

Question

The value of A in terms of Q and R is to

Choices

Choice (4) Response

a.

3QπR4

b.

2Q2πR4

c.

3QπR

d.

Both b. and a. are correct

Question number: 354 (3 of 4 Based on Passage) Show Passage

» Electrostatics » Coulomb's Law

MCQ▾

Question

The electric field outside the sphere is (k=14πϵ0)

Choices

Choice (4) Response

a.

kQr2

b.

kQ2r2

c.

kQr

d.

kQr3

Question number: 355 (4 of 4 Based on Passage) Show Passage

» Electrostatics » Coulomb's Law

MCQ▾

Question

If charge q is placed at r (r > R) than it would experience force is,

Choices

Choice (4) Response

a.

k q Q r

b.

kqQr2

c.

kQ2r

d.

kqQR

Question number: 356

» Kinematics » Uniform and Non-Uniform Motion

MCQ▾

Question

A block of metal weighing 5 kg is resting on a frictionless plane. It is stack by a jet releasing water at a rate of 1 kg/s and at a speed of 10 m/s. The initial acceleration of the block will be –

Choices

Choice (4) Response

a.

5 m/s 2

b.

2 m/s 2

c.

2.5 m/s 2

d.

0

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