AIIMS (All India Institute of Medical Sciences) Physics: Questions 216 - 220 of 500

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Question number: 216

» Atoms and Nuclei » Radioactivity

Appeared in Year: 2006

Assertion-Reason▾

Question

Assertion (Ꭺ)

Cobalt-60 is useful in cancer therapy.

Reason (Ꭱ)

Cobalt-60 is source ofradiations 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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Question number: 217

» Oscillations and Waves » Longitudinal and Transverse Waves

Appeared in Year: 2006

MCQ▾

Question

For waves propagating in a medium, identify the property that is independent of the others

Choices

Choice (4) Response

a.

Wavelength

b.

Velocity

c.

Frequency

d.

None of the above

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Question number: 218

» Dual Nature of Matter and Radiation » Photoelectric Effect

Appeared in Year: 2004

Assertion-Reason▾

Question

Assertion (Ꭺ)

Photoelectric effect demonstrates the wave nature of light.

Reason (Ꭱ)

The number of photo electrons is proportional to the frequency of light.

Choices

Choice (4) Response

a.

Ꭺ is true but Ꭱ is false

b.

Ꭺ is false but Ꭱ is true

c.

Both Ꭺ and Ꭱ are false

d.

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

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Question number: 219

» Oscillations and Waves » Harmonics

Appeared in Year: 2006

MCQ▾

Question

A boat at anchor is rocked by waves whose crests are 100m apart and velocity is. The boat bounces up once in every –

Choices

Choice (4) Response

a.

0.25 s

b.

4 s

c.

75 s

d.

2500 s

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Question number: 220

» Properties of Solids & Liquids » Reynolds Number

Appeared in Year: 2005

Assertion-Reason▾

Question

Assertion (Ꭺ)

For Reynold number Re > 2000, the flow of fluid is turbulent.

Reason (Ꭱ)

Inertial forces are dominant compared to the viscous forces at such high Reynold numbers

Choices

Choice (4) Response

a.

Ꭺ is true but Ꭱ is 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 false

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