AIIMS (All India Institute of Medical Sciences) Physics: Questions 247 - 249 of 500

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Question number: 247

» Current Electricity » Electric Cell and Its Internal Resistance

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Appeared in Year: 2004

Assertion-Reason▾

Question

Assertion (Ꭺ)

A larger dry cell has higher emf.

Reason (Ꭱ)

The emf of a dry cell is proportional to its size.

Choices

Choice (4)Response

a.

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

b.

Both Ꭺ and Ꭱ are false

c.

Ꭺ is true but Ꭱ is false

d.

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

Question number: 248

» Ray Optics » Resolving Power of Microscopes and Astronomical Telescopes

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Appeared in Year: 2005

Assertion-Reason▾

Question

Assertion (Ꭺ)

The resolving power of a telescope is more if the diameter of the objective lens is more.

Reason (Ꭱ)

Objective lens of large diameter collects more light.

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.

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

d.

Ꭺ is false but Ꭱ is true

Question number: 249

» X - Rays » Bragg's Law

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Appeared in Year: 2004

Assertion-Reason▾

Question

Assertion (Ꭺ)

Crystalline solids can cause X-rays to diffract.

Reason (Ꭱ)

Interatomic distance in crystalline solids is of the order of 0.1 nm.

Choices

Choice (4)Response

a.

Both Ꭺ and Ꭱ are false

b.

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

c.

Ꭺ is false but Ꭱ is true

d.

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

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