CSIR Physical Sciences: Questions 126 - 129 of 401

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Question number: 126

» Classical Mechanics » Special Theory of Relativity » Relativistic Kinematics

Appeared in Year: 2012

MCQ▾

Question

A horizontal circular platform rotates with a constant angular velocity Equation directed vertically upwards. A person seated at the centre shoots a bullet of mass ‘m’ horizontally with speed ‘v’. The acceleration of the bullet, in the reference frame of the shooter, is – (June)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 127

» Classical Mechanics » Noether's Theorem

Appeared in Year: 2012

MCQ▾

Question

A binary star system consists of two stars S1 and S2, with masses m and 2m respectively separated by a distance r. If both S1 and S2 individually follow circular orbits around the centre of mass with instantaneous speed Equation and Equation respectively, the speed ratio Equation is – (December)

Choices

Choice (4) Response

a.

0

b.

2

c.

1

d.

Equation

Question number: 128

» Mathematical Methods of Physics » Partial Differential Equations

Appeared in Year: 2012

MCQ▾

Question

The unit normal vector at the point,

Equation

On the surface of the ellipsoid

Equation is – (December)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 129

» Thermodynamic and Statistical Physics » Blackbody Radiation

Appeared in Year: 2014

MCQ▾

Question

Which of the graphs below gives the correct qualitative behavior of the energy density Equation of black body radiation of wavelength Equation at two temperature Equation and Equation ? (June)

Choices

Choice (4) Response

a.

Energy density as a function of wavelength: Choice A

Energy Density as a Function of Wavelength: Choice A

In figure, the graph shows the qualitative behavior of the energy density of black body radiation of wavelength at two temperatures.

b.

Energy density as a function of wavelength: Choice B

Energy Density as a Function of Wavelength: Choice B

In figure, the graph shows the qualitative behavior of the energy density of black body radiation of wavelength at two temperatures.

c.

Energy density as a function of wavelength: Choice C

Energy Density as a Function of Wavelength: Choice C

In figure, the graph shows the qualitative behavior of the energy density of black body radiation of wavelength at two temperatures.

d.

Energy density as a function of wavelength: Choice D

Energy Density as a Function of Wavelength: Choice D

In figure, the graph shows the qualitative behavior of the energy density of black body radiation of wavelength at two temperatures.

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