AIIMS Physics: Questions 217 - 221 of 500

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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

Question number: 218

» Dual Nature of Matter and Radiation » Photoelectric Effect

Appeared in Year: 2004

Assertion-Reason▾

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

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 25ms . The boat bounces up once in every –

Choices

Choice (4) Response
a.

0.25 s

b.

4 s

c.

75 s

d.

2500 s

Question number: 220

» Properties of Solids & Liquids » Reynolds Number

Appeared in Year: 2005

Assertion-Reason▾

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

Question number: 221

» Ray Optics » Snell's Law

Appeared in Year: 2005

Assertion-Reason▾

Assertion (Ꭺ)

By roughening the surface of a glass sheet its transparency can be reduced.

Reason (Ꭱ)

Glass sheet with rough surface absorbs more light.

Choices

Choice (4) Response
a. Ꭺ is false but Ꭱ is true
b. Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ
c. Ꭺ is true but Ꭱ is false
d. Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

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