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

» Kinetic Theory of Gases » Kinetic Theory of Gases

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

» Work, Energy and Power » Conservation of Mechanical Energy

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

» Laws of Motion » Impulse

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

» Dual Nature of Matter and Radiation » De-Broglie Relation

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

» Laws of Motion » Law of Conservation of Linear Momentum

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.

A bullet of mass m is fired horizontally into a large sphere.

A Bullet of Mass M Is Fired Horizontally Into a Large Sphere.

In figure a bullet of mass m is fired horizontally in to 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
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