AIIMS Physics: Questions 188 - 192 of 500

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Question number: 188

» Kinetic Theory of Gases » Law of Equipartition of Energy

Appeared in Year: 2004

MCQ▾

Question

vrms , vav and vmp are root mean square, average and most probable speeds of molecules of a gas obeying Maxwell velocity distribution. Which of the following statements is correct?

Choices

Choice (4) Response

a.

Vmp>Vrms>Vav

b.

Vrms<Vav<Vmp

c.

Vrms>Vav>Vmp

d.

Vmp<Vrms<Vav

Question number: 189

» Wave Optics » Interference

Appeared in Year: 2000

MCQ▾

Question

The ratio of intensities of two waves is 9: 1. When they superimpose, the ratio of maximum to minimum intensity will become –

Choices

Choice (4) Response

a.

4: 1

b.

1: 1

c.

2: 1

d.

3: 1

Question number: 190

» Thermodynamics » Carnot Engine and Its Efficiency

Appeared in Year: 2001

MCQ▾

Question

If the system takes 100 Cal. heat, and releases 80 cal. to sink, if source temperature is 127°C find the sink temp –

Choices

Choice (4) Response

a.

107°C

b.

47°C

c.

67°C

d.

127°C

Question number: 191

» Properties of Solids & Liquids » Heat Transfer » Conduction

Appeared in Year: 1998

MCQ▾

Question

On a cold morning, a metal surface will feel colder to touch than a wooden surface because –

Choices

Choice (4) Response

a.

Metal has low specific heat

b.

Metal has low thermal conductivity

c.

Metal has high specific heat

d.

Metal has high thermal conductivity

Question number: 192

» Communication System » Propagation of Electromagnetic Waves in the Atmosphere

Appeared in Year: 2003

MCQ▾

Question

The maximum distance up to which TV transmission from a TV tower of height h can be received is proportional to –

Choices

Choice (4) Response

a.

h12

b.

h2

c.

h32

d.

h

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