force of gravity, solids and fluids - Category wise Question and Answer Practice Test with Solutions

Question : 16 [IAS Prelim]

For which one of the following is capillarity not the reason?

a) Spread a water drop on a cotton cloth

b) Rising of underground water

c) Blotting of ink

d) Rising of water from the roots of a plant to its foliage

Answer »

Question : 17 [NDA]

Consider the following statements:

1. The gravitational force exerted by the sun on the moon is greater than the gravitational force exerted by the earth on the moon.
2. 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) Both 1 and 2

b) 2 only

c) 1 only

d) Neither 1 nor 2

Answer »

Question : 18 [IAS Prelim]

If the radius of the earth were to shrink by one percent, its mass remaining the same, the value of g on the earth’s surface would:

a) decrease by 0.5%

b) increase by 2%

c) increase by 0.5%

d) decrease by 2%

Answer »

Question : 19 [NDA]

Consider the following statements: A body weighs less at the equator than at the poles because:

1. earth rotates about its axis.
2. the ice cap at the poles increases gravitational pull.
3. equatorial diameter is greater than the polar diameter.
4. of some unknown facts.

Which of the statements given above is/are incorrect?

a) 1 and 3

b) 3 only

c) 1 and 2

d) 4 only

Answer »

Question : 20

An astronaut in the orbit in a spacecraft feels weightlessness

a) because acceleration in the orbit is equal to acceleration of gravity outside

b) due to the face that space craft has no energy

c) due to the absence of gravity inside

d) their is no gravity outside

Answer »