JavaScript is disabled on your browser. Enable JavaScript to use this site. Learn More

The ratio of SI units to CGS of the gravitational intensity is ____.

103

infinity

zero

102

Consider the earth to be a homogeneous sphere. Scientist A goes deep down in a mine and scientist B goes up high in a balloon. The gravitational field measured by ____.

A goes on decreasing and that by B goes on increasing

B goes on decreasing and that by A goes on increasing

each remains unchanged

each goes on decreasing

A particle of mass 10 g is kept on the surface of a uniform sphere of mass 100 kg and radius 10 cm. Find the work to be done against the gravitational force between them to take the particle far away from the sphere (you may take _____.

6.67 ( 10–9 J

6.67 ( 10–10 J

13.34 ( 10–10 J

3.33 ( 10–10 J

A missile is launched with a velocity less than the escape velocity. The sum of its kinetic and potential energy is _____.

Positive

Negative

Zero

May be positive or negative depending upon its initial velocity

The escape velocity on earth is 11.2 km/s. On another planet having twice radius and 8 time’s mass of the earth, the escape velocity will be _____.

3.7 km/s

11.2 km/s

22.4 km/s

43.2 km/s

Escape velocity on the earth _____.

Is less than that on the moon

Depends upon the mass of the body

Depends upon the direction of projection

Depends upon the height from which it is projected

The escape velocity for the earth is 11.2 km/sec. The mass of another planet is 100 times that of the earth and its radius is 4 times that of the earth. The escape velocity for this planet will be _____.

112.0 km/s

5.6 km/s

280.0 km/s

56.0 km/s

If the earth stops rotating, the weight of a body shall

become zero

remain unaffected

increase

decrease

A body is projected vertically upwards from the surface of a planet of radius R with a velocity equal to half the escape velocity for that planet. The maximum height attained by the body is _____.

R/3

R/2

R/4

R/5

The kinetic energy needed to project a body of mass m from the earth surface (radius R) to infinity is _____.

mgR/2

2 mgR

mgR

mgR/4

103

infinity

zero

102

Consider the earth to be a homogeneous sphere. Scientist A goes deep down in a mine and scientist B goes up high in a balloon. The gravitational field measured by ____.

A goes on decreasing and that by B goes on increasing

B goes on decreasing and that by A goes on increasing

each remains unchanged

each goes on decreasing

A particle of mass 10 g is kept on the surface of a uniform sphere of mass 100 kg and radius 10 cm. Find the work to be done against the gravitational force between them to take the particle far away from the sphere (you may take _____.

6.67 ( 10–9 J

6.67 ( 10–10 J

13.34 ( 10–10 J

3.33 ( 10–10 J

A missile is launched with a velocity less than the escape velocity. The sum of its kinetic and potential energy is _____.

Positive

Negative

Zero

May be positive or negative depending upon its initial velocity

The escape velocity on earth is 11.2 km/s. On another planet having twice radius and 8 time’s mass of the earth, the escape velocity will be _____.

3.7 km/s

11.2 km/s

22.4 km/s

43.2 km/s

Escape velocity on the earth _____.

Is less than that on the moon

Depends upon the mass of the body

Depends upon the direction of projection

Depends upon the height from which it is projected

The escape velocity for the earth is 11.2 km/sec. The mass of another planet is 100 times that of the earth and its radius is 4 times that of the earth. The escape velocity for this planet will be _____.

112.0 km/s

5.6 km/s

280.0 km/s

56.0 km/s

If the earth stops rotating, the weight of a body shall

become zero

remain unaffected

increase

decrease

A body is projected vertically upwards from the surface of a planet of radius R with a velocity equal to half the escape velocity for that planet. The maximum height attained by the body is _____.

R/3

R/2

R/4

R/5

The kinetic energy needed to project a body of mass m from the earth surface (radius R) to infinity is _____.

mgR/2

2 mgR

mgR

mgR/4

This test will help you to prepare for AIEEE and IIT JEE exams.

**
XII_Physics_Electromagnetic Induction_7**

10 Questions
| 408 Attempts

**
XII_Physics_Electromagnetic Induction_6**

10 Questions
| 459 Attempts

**
XII_Physics_Electromagnetic Induction_5**

10 Questions
| 204 Attempts

Price:$175

Price:$100

**
PHYSICAL CHEMISTRY [Chapter 4: Thermodynamics]**

Price:$27.27274