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AIIMS (All India Institute of Medical Sciences) Physics: Questions 238 - 240 of 500

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Question 238

Appeared in Year: 2002

Question

Assertion-Reason▾

Assertion(Ꭺ)

We cannot think of a magnetic field configuration with three poles.

Reason(Ꭱ)

A bar magnet does exert a torque on itself due to its own field.

Choices

Choice (4)Response

a.

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

b.

Ꭺ is true but Ꭱ is false

c.

Both Ꭺ and Ꭱ are false

d.

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

Question 239

Appeared in Year: 2006

Question

Assertion-Reason▾

Assertion(Ꭺ)

In optical fiber, the diameter of the core is kept small.

Reason(Ꭱ)

This smaller diameter of the core ensures that the fiber should have incident angle more than the critical angle required for total internal reflection.

Choices

Choice (4)Response

a.

Both Ꭺ and Ꭱ are false

b.

Ꭺ is true but Ꭱ is false

c.

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

d.

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

Question 240

Appeared in Year: 2002

Question

Assertion-Reason▾

Assertion(Ꭺ)

Stress is the internal force per unit area of a body

Reason(Ꭱ)

Rubber is more elastic than steel

Choices

Choice (4)Response

a.

Both Ꭺ and Ꭱ are false

b.

Ꭺ is true but Ꭱ is false

c.

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

d.

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

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