Assertion (A) The coulomb force is the dominating force in the universe.Reason (R) The Coulomb force is stronger than the gravitational force.

Both A and R are true and R is the correct explanation of A

Both A and R are true, but R is not the correct explanation of A

Assertion (A) The coulomb force is the dominating force in the universe.<br>Reason (R) The Coulomb force is stronger than the gravitational force.

E is stronger than B, A is stronger than E, C is stronger than E, and D is stronger than A. Who is the weakest man?

A

D

B

C

A

D

B

Given below are certain facts about the “gravitational force”. Identify the INCORRECT one. A. Gravitational force depends on the intervening medium between the objects. B. Gravitational force is a type of conservative force. C. The gravitational force between two particles acts perpendicular to the line joining the two particles.

A

Only A

B

B and C

C

A and C

D

All are correct

An assertion and a reason are given below. Assertion: The phenomenon of nuclear fission generates great energy. Reason: The process in which a nucleus is broken into two parts is called nuclear fission. Choose the answer. A. Both Assertion and Reason are true and Reason is the correct explanation of Assertion. B. Both Assertion and Reason are true but Reason is not the correct explanation of Assertion. C. Both Assertion and Reason are false. D. Assertion is true but Reason is false.

A

B

D

C

B

D

C

Among 5 friends, A is weaker than C but stronger than D. C is weaker and shorter than E. E is shorter than A, but taller than D. B is stronger than E and taller than A. Who is both the strongest and tallest?

A

B

E

C

D

B

Consider the following statements regarding Gravitational lensing 1. Gravitational lensing describes the fact that light is deflected by large masses in the universe. 2. The more massive the object, the stronger its gravitational field and hence the greater the bending of light rays. 3. Lensing, however, cannot be used to verify the existence of Dark Matter. Which of the statements given above is/are correct?

A

1 only

B

1 and 2 only

C

2 and 3 only

D

1, 2 and 3

Consider the following statements about Gravitational Waves: 1. Albert Einstein predicted the existence of gravitational waves in 1916 in his general theory of relativity. 2. The gravitational waves can work as sirens to measure the expansion rate of the universe and to understand the origin and the future of the universe. 3. In 2015, LIGO physically sensed the distortions in spacetime caused by passing gravitational waves generated by two colliding black holes nearly 1.3 billion light-years away Which of the statements given above is/are correct?

A

1 and 2 only

B

1 and 3 only

C

2 and 3 only

D

1, 2 and 3

A smooth plane inclined at an angle θ with the horizontal as shown in the given figure. A body starts from rest and slides down on the inclined surface. The time taken by the body to reach the bottom is
Gravitational Force mcq question image

A

$$\frac{{\sqrt {2h} }}{g}$$

B

$$\sqrt {\frac{{2l}}{g}} $$

C

$$\frac{1}{{\sin \theta }}\sqrt {\frac{{2h}}{g}} $$

D

$$\sin \theta \frac{{\sqrt {2h} }}{g}$$

The standard parameter of Earth is 398,600 km3/s2, distance between Earth and Mars is 225 x 106 km, force of gravitational attraction between Earth and Mars is 6.39 x 1023 N. What is the standard gravitational parameter of Mars? Given, universal gravitational constant is 6.67408 × 10-11 m3 kg-1 s-2.

A

78,901 km3/s2

B

12,890 km3/s2

C

34,567 km3/s2

D

42,647 km3/s2

Consider the following statements: The gravitational force exerted by the sun on the moon is greater than the gravitational force exerted by the earth on the moon. A heavy body falls at a faster rate than a light body in vacuum. Which of the following statements given above is/are correct ?

A

1 only

B

2 only

C

Both 1 and 2

D

Neither 1 nor 2

Which of the following statements is/are correct? 1. Gravitational Waves were predicted by Albert Einstein in 1916 on the basis of his theory of General Relativity 2. Gravitational waves do also exist in the Newtonian theory of Gravitation 3. Gravitational Waves are to be detected by very sensitive detectors known as Interferometers Select the correct answer using the code given below:

A

1 only

B

1 and 2 only

C

2 and 3 only

D

1, 2 and 3

Assertion (A) The coulomb force is the dominating force in the universe.
Reason (R) The Coulomb force is stronger than the gravitational force.

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