Essentials of PHYSICS Class IX>Chapter 3 - Gravitation>Multiple Choice Questions (MCQs)>Q 39

EASY

9th CBSE

IMPORTANT

Earn 100

The weight of an object at the centre of the earth having radius $R$ , is :

100% studentsanswered this correctly

Important Questions on Gravitation

EASY

9th CBSE

IMPORTANT

Essentials of PHYSICS Class IX>Chapter 3 - Gravitation>Multiple Choice Questions (MCQs)>Q 40

An object of mass

1 kg

falls towards the earth, mass of the earth

6 \times 10^{24} kg

due to gravitational attraction. If

F_{1}

is the magnitude of force exerted by the earth on the object and

F_{2}

is the magnitude of force exerted by the object on the earth then :

EASY

9th CBSE

IMPORTANT

Essentials of PHYSICS Class IX>Chapter 3 - Gravitation>Multiple Choice Questions (MCQs)>Q 41

A body floats in a liquid :

EASY

9th CBSE

IMPORTANT

Essentials of PHYSICS Class IX>Chapter 3 - Gravitation>Multiple Choice Questions (MCQs)>Q 42

If

d_{a}

and

d_{b}

are densities of the material of body and the liquid respectively, the body can float only when :

EASY

9th CBSE

IMPORTANT

Essentials of PHYSICS Class IX>Chapter 3 - Gravitation>Multiple Choice Questions (MCQs)>Q 43

Mass of an object in air is

40 kg

. Mass of this object in water will be :

MEDIUM

9th CBSE

IMPORTANT

Essentials of PHYSICS Class IX>Chapter 3 - Gravitation>Multiple Choice Questions (MCQs)>Q 44

A jet plane flies in the air because:

EASY

9th CBSE

IMPORTANT

Essentials of PHYSICS Class IX>Chapter 3 - Gravitation>Multiple Choice Questions (MCQs)>Q 45

A glass in cuboidal shape has dimensions

10 cm \times 10 cm \times 4 cm

. It is kept with its perfect face (

10 cm \times 10 cm

) in contact with the table. If it is lifted and allowed to rest on the table with its smaller surface (

10 cm \times 4 cm

) in contact with the table the pressure exerted will:

EASY

9th CBSE

IMPORTANT

Essentials of PHYSICS Class IX>Chapter 3 - Gravitation>Multiple Choice Questions (MCQs)>Q 46

The weight of a body felt in tap water and salted water are

W_{A}

and

W_{B}

respectively, then :

MEDIUM

9th CBSE

IMPORTANT

Essentials of PHYSICS Class IX>Chapter 3 - Gravitation>Multiple Choice Questions (MCQs)>Q 47

When all ice floating in water melts, the level of water in container: