KVPY Stream-SA (Class 11) Physics: Questions 230 - 234 of 252

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Question number: 230

» Thermodynamics » Laws of Thermodynamics » First Law of Thermodynamics

MCQ▾

Question

If two moles of oxygen is heated from 240 C to 300 C at constant volume, its internal energy changes by 480 J. The molar specific heat of oxygen at constant volume is,

Choices

Choice (4) Response

a.

10 J K-1mol-1

b.

40 J K-1 mol-1

c.

5 J K-1 mol-1

d.

20 J K-1 mol-1

Question number: 231

» Kinetic Theory of Gases » Equation of State of a Perfect Gas

MCQ▾

Question

For a given mass of gas volume is decreased by 15 % at a constant temperature. The pressure will increase by nearly,

Choices

Choice (4) Response

a.

1.1 %

b.

2.13%

c.

1.18%

d.

2.25%

Question number: 232

» Work, Energy and Power » Power

MCQ▾

Question

A horse pulse a wagon with a force of 550 N at an angle of 300 with the horizontal at a speed of 10 km h-1. The power of the horse is,

Choices

Choice (4) Response

a.

1323 W

b.

2313 W

c.

595 W

d.

1233 W

Question number: 233

» Oscillations and Waves » Simple Harmonic Motion » Force, Velocity, and Acceleration

MCQ▾

Question

A block is kept on a horizontal table. The table is undergoing simple harmonic motion (S. H. M) of frequency 5 Hz in a horizontal plane. The coefficient of static friction between block and the table surface is 0.93. The maximum amplitude of the table at which the block does not slip on the surface is –

Choices

Choice (4) Response

a.

0.02 m

b.

0.0078m

c.

9.4×103m

d.

6.3×103m

Question number: 234

» Gravitation » Escape Velocity

MCQ▾

Question

The escape velocity from a spherical planet is v0. What is the escape velocity corresponding to another planet of half the radius and twice the mean density?

Choices

Choice (4) Response

a.

2v0

b.

v02

c.

v02

d.

v0

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