# Chapter 2: Gravitation Physics Mcqs for High School - Grade 9 - Set 1

1)    The gravitational force of attraction between satellite and earth provides

a. centripetal force
b. centrifugal force
c. resistive force
d. momentum force
 Answer  Explanation ANSWER: centripetal force Explanation: No explanation is available for this question!

2)   The Earth attracts a body with a force equal to its

a. weight
b. area
c. volume
d. pollution
 Answer  Explanation ANSWER: weight Explanation: No explanation is available for this question!

3)   The natural satellite of Earth is

a. moon
b. stars
c. sun
d. mars
 Answer  Explanation ANSWER: moon Explanation: No explanation is available for this question!

4)   A satellite revolving very close to earth has a speed nearly

a. 7 ms-1
b. 8 ms-1
c. 9 ms-1
d. 10 ms-1
 Answer  Explanation ANSWER: 8 ms-1 Explanation: No explanation is available for this question!

5)   If two masses are m1 and m2, distance is ‘d’,and constant of gravitation is ‘G’, then the gravitational force for attraction will be

a. F = G (m1 m2&frac;d²)
b. F = G (m1 + m2&frac;d²)
c. F= G (m1 - m2&frac;d²)
d. F= G (d²&frac;m1 - m2)
 Answer  Explanation ANSWER: F = G (m1 m2&frac;d²) Explanation: No explanation is available for this question!

6)   An object that revolves around a planet is called a

a. robot
b. modulus
c. solar cars
d. satellite
 Answer  Explanation ANSWER: satellite Explanation: No explanation is available for this question!

7)   The gravitation is inversely related to

a. distance between masses
b. product of magnitude of masses
c. direction of masses
d. square of distance between masses
 Answer  Explanation ANSWER: square of distance between masses Explanation: No explanation is available for this question!

8)   To complete one revolution around the Earth, the communication satellites take

a. 24 hours
b. 36 hours
c. 48 hours
d. 72 hours
 Answer  Explanation ANSWER: 24 hours Explanation: No explanation is available for this question!

9)   The first man who came up with the idea of gravity was

a. Henry Briggs
b. John Napier
c. Jobst Burgi
d. Isaac Newton
 Answer  Explanation ANSWER: Isaac Newton Explanation: No explanation is available for this question!

10)   The velocity of the geostationary satellite to earth is

a. 10 ms-1
b. 15 ms-1
c. zero
d. 1 ms-1
 Answer  Explanation ANSWER: zero Explanation: No explanation is available for this question!