Mass of a particular amount of substance 1. is the amount of matter present in it. 2. - does not vary from place to place. 3. changes with change in gravitational force. Select the correct answer using the code given below:

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Q: 15 (NDA-I/2016)
Mass of a particular amount of substance
1. is the amount of matter present in it.
2. - does not vary from place to place.
3. changes with change in gravitational force.
Select the correct answer using the code given below:

question_subject: 

Science

question_exam: 

NDA-I

stats: 

0,23,18,9,23,4,5

keywords: 

{'mass': [0, 0, 2, 3], 'gravitational force': [0, 0, 0, 6], 'particular amount': [0, 0, 0, 1], 'matter': [0, 0, 1, 0], 'substance': [2, 1, 7, 7], 'amount': [1, 2, 4, 9]}

The correct answer is option-2 "1 and 2 only".

Explanation:

1. Mass of a particular amount of substance is the amount of matter present in it. This means that mass represents the quantity of matter in an object. It is a measure of the inertia of an object and is independent of its location or surroundings.

2. Mass does not vary from place to place. This means that the mass of an object remains the same regardless of its location on Earth or any other place in the universe. It is an intrinsic property of an object and is not affected by external factors such as gravitational force or location.

3. The statement that mass changes with change in gravitational force is incorrect. Mass is not influenced by gravitational force, but weight is. Weight is the force exerted on an object due to gravity and is directly proportional to gravitational force. However, mass remains the same irrespective of the gravitational force acting on it.

Therefore, options 1 and 2 correctly describe the properties of mass, while option 3 incorrectly states that mass changes with change in gravitational force.