General Science Class 9 MCQS

According to Newton's law of universal gravitation force ∝ :

1. m1 m2
2. 1/r2
3. r2
4. Both (a) and (b)

Gravitational force is always :

1. Repulsive
2. Attractive
3. Both
4. None of these

]Numerical value of ______ remains constant every where.

1. g
2. G
3. F
4. W

Gravitation force is ______ of the medium between the objects.

1. Dependent
2. Independent
3. Both 'a' and 'b'
4. None of these

Near Earth's surface g = :

1. 10 ms^-2
2. 1.6 ms^-1
3. Both (a) and (b)
4. None of these

Newton's law of gravitation is consistent with Newton's ____ law of motion.

1. 1st
2. 2nd
3. 3rd
4. All of them

Spring balance is used to measure :

1. Mass
2. Weight
3. Elasticity
4. Density

Your weight as measured on Earth will be _____ on Moon?

1. Increased
2. Decreased
3. Remains same
4. None of these

Mass of Earth is :

1. 6.0 x 10^23 kg
2. 6.0 x 10^24 kg
3. 6.0 ´ 10^25 kg
4. 6.0 ´ 10^26 kg

A communication satellite completes its one revolution around the Earth in ______ hours.

1. 6
2. 12
3. 18
4. 24