AIIMS Physics: Questions 213 - 216 of 500

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Question number: 213

» Ray Optics » Snell's Law

MCQ▾

Question

Velocity of light in a liquid is 2.12×108ms1 and in air, it is 3×108ms1 . If a ray of light passes from this liquid into air, the critical angle will be –

Choices

Choice (4) Response

a.

600

b.

450

c.

300

d.

Question does not provide sufficient data or is vague

Question number: 214

» Properties of Solids & Liquids » Boyle's Law & Applications

Appeared in Year: 2006

Assertion-Reason▾

Assertion (Ꭺ)

A thin stainless steel needle can lay floating on a still water surface.

Reason (Ꭱ)

Any object floats when the buoyancy force balances the weight of the object.

Choices

Choice (4) Response

a.

Ꭺ is false but Ꭱ is true

b.

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

c.

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

d.

Both Ꭺ and Ꭱ are false

Question number: 215

» Magnetic Effects of Current and Magnetism » Para, Dia and Ferro-Magnetic Substances

Appeared in Year: 2006

Assertion-Reason▾

Assertion (Ꭺ)

Diamagnetic materials can exhibit magnetism.

Reason (Ꭱ)

Diamagnetic materials have permanent magnetic dipole moment.

Choices

Choice (4) Response

a.

Ꭺ is true but Ꭱ is false

b.

Both Ꭺ and Ꭱ are false

c.

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

d.

Ꭺ is false but Ꭱ is true

Question number: 216

» Atoms and Nuclei » Radioactivity

Appeared in Year: 2006

Assertion-Reason▾

Assertion (Ꭺ)

Cobalt-60 is useful in cancer therapy.

Reason (Ꭱ)

Cobalt-60 is source of γ radiations capable of killing cancerous cell.

Choices

Choice (4) Response

a.

Ꭺ is false but Ꭱ is true

b.

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

c.

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

d.

Ꭺ is true but Ꭱ is false

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