Chapter 9: Gravitation Assertion-Reason Questions | science Class 9 CBSE

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Chapter 9: Gravitation Assertion-Reason Questions | science Class 9 CBSE | ByteNotes.in

Assertion-Reason

Check the statement and reason

A-R

Question 1

Logic Check

Assertion (A): Every object in the universe attracts every other object. Reason (R): Gravitational force is a universal force that acts between all objects with mass.

Reasoning Options

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Assertion-Reason

Check the statement and reason

A-R

Question 2

Logic Check

Assertion (A): The moon revolves around the Earth due to the gravitational force between them. Reason (R): The Earth provides the centripetal force required for the moon's circular motion.

Reasoning Options

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Assertion-Reason

Check the statement and reason

A-R

Question 3

Logic Check

Assertion (A): The force of gravitation depends only on the distance between the objects. Reason (R): Gravitational force is inversely proportional to the square of the distance between objects.

Reasoning Options

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Assertion-Reason

Check the statement and reason

A-R

Question 4

Logic Check

Assertion (A): Objects in free fall experience acceleration. Reason (R): This acceleration is due to Earth's gravitational force acting on the object.

Reasoning Options

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Assertion-Reason

Check the statement and reason

A-R

Question 5

Logic Check

Assertion (A): The value of 'g' decreases as we move from poles to the equator. Reason (R): The Earth is not a perfect sphere; its radius is greater at the equator than at the poles.

Reasoning Options

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Assertion-Reason

Check the statement and reason

A-R

Question 6

Logic Check

Assertion (A): The weight of an object remains the same at all places. Reason (R): Weight is the product of mass and the acceleration due to gravity.

Reasoning Options

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Assertion-Reason

Check the statement and reason

A-R

Question 7

Logic Check

Assertion (A): The mass of an object is constant everywhere. Reason (R): Mass is a measure of the amount of matter in an object and does not change with location.

Reasoning Options

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Assertion-Reason

Check the statement and reason

A-R

Question 8

Logic Check

Assertion (A): Weight is a vector quantity. Reason (R): Weight has both magnitude and direction as it acts vertically downward.

Reasoning Options

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Assertion-Reason

Check the statement and reason

A-R

Question 9

Logic Check

Assertion (A): The value of acceleration due to gravity on the moon is one-sixth that on the Earth. Reason (R): The moon has lesser mass and smaller radius compared to the Earth.

Reasoning Options

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Assertion-Reason

Check the statement and reason

A-R

Question 10

Logic Check

Assertion (A): Pressure is the force acting perpendicular to a surface per unit area. Reason (R): Greater the area, lesser the pressure exerted by the same force.

Reasoning Options

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Chapter sections

Chapter 9: Gravitation | Assertion-Reason

Assertion (A): Every object in the universe attracts every other object. Reason (R): Gravitational force is a universal force that acts between all objects with mass.

Assertion (A): The moon revolves around the Earth due to the gravitational force between them. Reason (R): The Earth provides the centripetal force required for the moon's circular motion.

Assertion (A): The force of gravitation depends only on the distance between the objects. Reason (R): Gravitational force is inversely proportional to the square of the distance between objects.

Assertion (A): Objects in free fall experience acceleration. Reason (R): This acceleration is due to Earth's gravitational force acting on the object.

Assertion (A): The value of 'g' decreases as we move from poles to the equator. Reason (R): The Earth is not a perfect sphere; its radius is greater at the equator than at the poles.

Assertion (A): The weight of an object remains the same at all places. Reason (R): Weight is the product of mass and the acceleration due to gravity.

Assertion (A): The mass of an object is constant everywhere. Reason (R): Mass is a measure of the amount of matter in an object and does not change with location.

Assertion (A): Weight is a vector quantity. Reason (R): Weight has both magnitude and direction as it acts vertically downward.

Assertion (A): The value of acceleration due to gravity on the moon is one-sixth that on the Earth. Reason (R): The moon has lesser mass and smaller radius compared to the Earth.

Assertion (A): Pressure is the force acting perpendicular to a surface per unit area. Reason (R): Greater the area, lesser the pressure exerted by the same force.

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