Physics Chapter 10: Gravitation - Class 9 Science Set 2

Question 1

The mass of the body on the moon is 40 kg. What is the weight on earth?

Accepted Answer

392 N

Answer

240 kg

Answer

240 N

Answer

400 Kg

Question 2

Newton’s law of gravitation applies to-

Accepted Answer

All bodies irrespective of the Size

Answer

small bodies only

Answer

Plants only

Answer

for Solar System

Question 3

The Gravitational force between two objects is F if the masses of both the objects are halved without altering the distance between them, then the gravitational force would become.

Accepted Answer

$\frac{f}{4}$

Answer

$\frac{f}{2}$

Answer

$f$

Answer

$2f$

Question 4

The earth attracts the moon with a gravitational force of 1020 N The Moon attracts the earth with a gravitational force of

Accepted Answer

Greater than $10^{20}$N

Answer

less than $10^{20}$N

Answer

$10^{20}$N

Answer

$10^{-20}$N

Question 5

The distance between two bodies become 6 times more than the usual distance The F become

Accepted Answer

$\frac{1}{36}$ times

Answer

36 times

Answer

6 times

Answer

12 times

Question 6

The Unit of G in the SI system is

Accepted Answer

$Nm^2/Kg^2$

Answer

$Nm^2Kg^2$

Answer

NmKg

Answer

$Nm^2/Kg$

Question 7

The Gravitational constant is denoted by

Answer

g

Answer

m

Answer

G

Answer

k

Question 8

The Unit of Weight in the SI System is

Accepted Answer

Newton

Answer

$Kgm^2$

Answer

$m/s^2$

Answer

$ms$

Question 9

When the Object is released from a height, its initial velocity is

Accepted Answer

$u=0$

Answer

$u=100 m/s$

Answer

$u=9.8 m/s$

Answer

$u=\frac{1}{2}$

Question 10

The relation between g & G is

Accepted Answer

$g=GM/R^2$

Answer

$g=GMR^2$

Answer

$g=MR^2/G$

Answer

$g=GR^2/M$

CHAPTER-10 GRAVITATION (SET-2)

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