KVPY Stream SB-SX (Class 12 & 1st Year BSC) Physics: Questions 136 - 138 of 250

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Question number: 136

» Physics and Measurement » Dimensions of Physical Quantities

Appeared in Year: 2015

MCQ▾

Question

The dimension of the area A of a black hole can be written in terms of the universal gravitational constant G, its mass M and the speed of light c as A=GαMβcγ . Here,

Choices

Choice (4) Response

a.

α=2,β=2andγ=4

b.

α=3,β=3andγ=2

c.

α=2,β=2andγ=4

d.

α=3,β=3andγ=2

Question number: 137

» Kinematics » Uniform and Non-Uniform Motion

Appeared in Year: 2013

MCQ▾

Question

A solid sphere rolls without slipping, first horizontal and then up to a point X at height h on an inclined plane before rolling down, as shown.

A solid sphere rolls without slipping

A Solid Sphere Rolls Without Slipping

In figure a solid sphere rolls without slipping, first horizontal and then up to a point X at height h on a inclined plane before rolling down.

The initial horizontal speed of the sphere is

Choices

Choice (4) Response

a.

2gh

b.

5gh7

c.

10gh7

d.

7gh5

Question number: 138

» Dual Nature of Matter and Radiation » Photoelectric Effect

MCQ▾

Question

If the wavelength of photon emitted due to transition of electron from fourth orbit to second orbit in a hydrogen atom is λ, then the wavelength of photon emitted due to transition of electron from fifth orbit to third orbit will be –

Choices

Choice (4) Response

a.

2253λ

b.

275125λ

c.

675256λ

d.

200275λ

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