KVPY Stream SB-SX (Class 12 & 1st Year BSC) Physics: Questions 36 - 38 of 250

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Question number: 36

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

Appeared in Year: 2010

MCQ▾

Question

A narrow parallel beam of light falls on a glass sphere of radius R and refractive index µ at normal incidence. The distance of the image from the outer edge is given by

Choices

Choice (4) Response
a.

R(2+μ)2(μ1)

b.

R(2+μ)2(μ+1)

c.

R(2μ)2(μ+1)

d.

R(2μ)2(μ1)

Question number: 37

» Thermodynamics » Laws of Thermodynamics » First Law of Thermodynamics

Appeared in Year: 2011

MCQ▾

Question

A container with rigid walls is covered with perfectly insulating material. The container is divided into two parts by a partition. One part contains a gas while the other is fully evacuated (vacuum). The partition is suddenly removed. The gas rushes to fill the entire volume and comes to equilibrium after a little time. If the gas is not ideal.

Choices

Choice (4) Response
a.

The initial pressure of the gas equals its final pressure

b.

The initial temperature of the gas equals its final temperature

c.

The initial internal energy of the gas equals its final internal energy

d.

The initial entropy of the gas equals its final entropy

Question number: 38

» Oscillations and Waves » Periodic Functions

Appeared in Year: 2010

MCQ▾

Question

A particle of mass m undergoes oscillations about x = 0 in a potential given by V(x)=12kx2V0cos(xa) , where V0, k, a are constants. If the amplitude of oscillation is much smaller than a, the time period is given by,

Choices

Choice (4) Response
a.

2πmk

b.

2πma2ka2V0

c.

2πma2ka2+V0

d.

2πma2V0

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