# KVPY (Kishore Vaigyanik Protsahan Yojana) Stream SB-SX (Class 12 & 1st Year B.Sc.) Physics: Questions 116 - 120 of 268

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## Question number: 116

Appeared in Year: 2013

MCQ▾

### Question

The average distance between molecules of an ideal gas at STP is approximately of the order of,

### Choices

Choice (4) Response

a.

100 nm

b.

1 nm

c.

100 cm

d.

1 𝜇m

## Question number: 117

Appeared in Year: 2014

MCQ▾

### Question

A solid cylinder P rolls without slipping from rest down an inclined plane attaining a speed at the bottom. Another smooth solid cylinder Q of same mass and dimensions slides without friction from rest down the inclined plane attaining a speed at the bottom. The ratio of the speeds is –

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 118

Appeared in Year: 2014

MCQ▾

### Question

A uniform thin rod of length 2L and mass m lies on a horizontal table. A horizontal impulse J is given to the rod at one end. There is no friction. The total K. E. of the rod just after the impulse will be:

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 119

Appeared in Year: 2013

MCQ▾

### Question

Photons of energy 7 eV are incident on two metals A and B with work functions 6 eV and 3 eV respectively. The minimum de Broglie wavelengths of the emitted photoelectrons with maximum energies are λA and λB, respectively where is nearly,

### Choices

Choice (4) Response

a.

4.0

b.

0.5

c.

2.0

d.

1.4

## Question number: 120

Appeared in Year: 2013

MCQ▾

### Question

A bullet of mass m is fired horizontally into a large sphere of mass M and radius R resting on a smooth horizontal table.

The bullet hits the sphere at a height h from the table and sticks to its surface. If the sphere starts rolling without slipping immediately on impact, then

### Choices

Choice (4) Response

a.

b.

c.

d.

f Page