AIIMS Physics: Questions 381 - 385 of 500

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Question number: 381

» Electrostatics » Capacitors

MCQ▾

Question

If the distance between the plats of a parallel plate capacitor is double and the dielectric is half, then its capacity will:

Choices

Choice (4) Response

a.

Decrease by 2 times

b.

Remain the same

c.

Decrease by 4 times

d.

Decrease by 6 times

Question number: 382

» Electromagnetic Induction & Alternating Currents » Self and Mutual Inductance

MCQ▾

Question

The of mutual inductance of two coils when magnetic flux changes by 4×102Wb and current changes by 0.08 A is –

Choices

Choice (4) Response

a.

2 H

b.

0.5 H

c.

0.4 H

d.

1 H

Question number: 383

» Oscillations and Waves » Wave Motion

Appeared in Year: 1998

Assertion-Reason▾

Assertion (Ꭺ)

Sound waves cannot propagate through vacuum but light waves can.

Reason (Ꭱ)

Sound waves cannot be polarized but light waves can be.

Choices

Choice (4) Response

a.

Ꭺ is true but Ꭱ is false

b.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

c.

Ꭺ is false but Ꭱ is true

d.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

Question number: 384

» Kinematics » Scalars and Vectors » Scalar and Vector Products

MCQ▾

Question

The vector P=2ai^+aj^+2k^ and Q=2ai^2j^k^ are perpendicular to each other. The positive value of a is:

Choices

Choice (4) Response

a.

3

b.

5

c.

1

d.

0

Question number: 385

» Laws of Motion » Impulse

MCQ▾

Question

In the figure given below, the position – time graph of a particle of mass 0.5 kg is shown. The impulse at t = 3 sec is –

A graph of position v/s time

A Graph of Position v/s Time

In figure the position verses time graph of a particle is shown.

Choices

Choice (4) Response

a.

2kgms1

b.

0.5kgms1

c.

2kgms1

d.

0.5kgms1

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