Mass of an object — task. Physics CBSE Live product, Class 9 (2025-26).

Choose the correct answer:

Assertion (A): The mass of any body remains zero at all times.

Reason (R): An object’s mass indicates both its resistance to motion (inertia) and the quantity of material present in it.

Both Assertion (A) and Reason (R) are true, and Reason (R) is the correct explanation of the Assertion (A)
Both Assertion (A) and Reason (R) are true, and Reason (R) is not the correct explanation of the Assertion (A)
Assertion (A) is true, but Reason (R) is false
Assertion (A) is false, but Reason (R) is true

Previous task

Exit to the topic

Next task

Send feedback

Did you find an error?

Send it to us!

2. Mass of an object

Question: