NEET Physics: Questions 2079 - 2081 of 2142

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Question number: 2079

» Rotational Motion » Rotational Kinetic Energy

Appeared in Year: 2016

MCQ▾

Question

A solid sphere of mass Equation and radius Equation is rotating about its diameter. A solid cylinder of the same mass and same radius is also rotating about its geometrical axis with an angular speed twice that of the sphere. The ratio of their kinetic energies of rotation Equation will be:

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 2080

» Properties of Solids & Liquids » Newton's Law of Cooling

Appeared in Year: 2016

MCQ▾

Question

A body cools from a temperature Equation to Equation in 10 minutes. The room temperature is T. Assume that Newton’s law of cooling is applicable. The temperature of the body at the end of next Equation will be –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 2081

» Gravitation » Gravitational Acceleration

Appeared in Year: 2016

MCQ▾

Question

Starting from the centre of the earth having radius Equation , the variation of Equation (acceleration due to gravity) is shown by –

Choices

Choice (4) Response

a.

Variation of g with r - Choice A

Variation of G With R - Choice a

In figure how the centre of the earth having radius r, the variation of g is shown.

b.

Variation of g with r - Choice B

Variation of G With R - Choice B

In figure how the centre of the earth having radius r, the variation of g is shown.

c.

Variation of g with r - Choice C

Variation of G With R - Choice C

In figure how the centre of the earth having radius r, the variation of g is shown.

d.

Variation of g with r - Choice D

Variation of G With R - Choice D

In figure how the centre of the earth having radius r, the variation of g is shown.

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