Class 10 Science I – CET/Board Practice MCQ (Gravitation)

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CET MCQ Quiz Science I – Gravitaion

SSC MAHARASHTRA BOARD CLASS X

Science I – Gravitation MCQs

1 / 10

In SI units, the value of G is equal to the _________ between two masses of 1 kg kept 1 m apart.

repulsive force

acceleration due to gravity

gravitational force

kepler’s constant

2 / 10

The square of orbital period of revolution of a planet around the Sun is directly proportional to the __________ of the mean distance of the planet from the Sun.

cube root

square

cube

square root

3 / 10

According to Newton’s law of gravitation, for two objects kept at a distances d from each other, if the distance between the objects is tripled, then the force between the two objects ________

increases by a factor of 3

decreases by a factor of 9

increases by a factor of 9

decreases by a factor of 3

4 / 10

Which of the following statement is incorrect in case of centre of mass?

All the mass of the object is assumed to be concentrated at the centre of mass

The centre of mass of any object having uniform density is at its centroid

The centre of mass of any object is always inside that object.

The centre of mass of a spherical object having uniform density at its geometrical centre.

5 / 10

Value of acceleration due to gravity (g) _________ as we go deep inside the earth.

increases initially and later decreases

increases

decreases initially and later increases

decreases

6 / 10

For bodies which are not spherical or having an irregular shape, the direction of the force is along the line joining their_______

(B) centres

(A) centre of masses

both (A) and (B)

7 / 10

The orbit of a planet is a/an ___________ with the Sun at _______

circular, the centre

parabolic, one of the foci

ellipse, one of the foci

hyperbolic, the centre

8 / 10

The minimum velocity of the spacecraft to escape from earth’s gravitational force must be ______

11.2 km/s

0.112 km/s

112 km/s

1.12 km/s

9 / 10

On the _______, value of acceleration due to gravity is 1/6 times that on the surface of the earth.

sun

planet mercury

moon

mars

10 / 10

Medium in which true free fall is possible is ________

vacuum

moist air

water

fluid

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Note:→ The following Quiz helps students to learn and practice Objectives.→ Each Quiz is of 10 questions→ Quiz has timer→ Questions will appear randomly→ To practice all objectives students are supposed to take Quiz again and again.

The above quiz consists of these topics: ⇒ Class 10 Science Part – 1 Chapter – 1 Gravitation

Note:
→ The following Quiz helps students to learn and practice Objectives.
→ Each Quiz is of 10 questions
→ Quiz has timer
→ Questions will appear randomly
→ To practice all objectives students are supposed to take Quiz again and again.

The above quiz consists of these topics:
⇒ Class 10 Science Part – 1 Chapter – 1 Gravitation