KVPY (Kishore Vaigyanik Protsahan Yojana) Stream-SA (Class 11) Physics: Questions 136 - 139 of 253

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Question number: 136

» Properties of Solids & Liquids » Latent Heat

MCQ▾

Question

An ice ball falls from a height h and melts completely. Assuming that only one-fifth of the heat generated is absorbed by the ice, calculate the value of h.

(Latent heat of fusion of ice = 3.4⨯105 JKg-1 and g = 10 Nkg-1)

Choices

Choice (4) Response

a.

160

b.

165

c.

170

d.

155

Question number: 137

» Thermodynamics » Concept of Temperature

Appeared in Year: 2015

MCQ▾

Question

One mole of ideal gas undergoes a linear process as shown in figure below. Its temperature expressed as function of volume V is

A linear process undergoes by idea gas

A Linear Process Undergoes by Idea Gas

In figure one mole of ideal gas undergoes a linear process is shown.

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 138

» Ray Optics » Lens Maker's Formula and Lens Formula

MCQ▾

Question

A convex lens of the focal length 22 cm is placed in front of a plane mirror at a distance 32 cm from the mirror. Where on the optical axis and from the centre of the lens should a small object be placed such that the final image coincides with the object?

Choices

Choice (4) Response

a.

11 cm and on the opposite side of the mirror

b.

11 cm and between the mirror and the lens

c.

22 cm and between the mirror and the lens

d.

22 cm and on the opposite side of the mirror

Question number: 139

» Oscillations and Waves » Speed of a Wave

MCQ▾

Question

For simple harmonic motion with amplitude 4 cm and time period 7 seconds, what is the velocity and acceleration at a displacement 3 cm from equilibrium position?

Choices

Choice (4) Response

a.

2.37, 2.42

b.

2.56, 2.73

c.

1.56, 2.18

d.

3.02, 3.34

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