Question

14. A-When Varun puts his ear on the railway track he could hear the approaching train
B- Sound can travel in vacuum​

Answer 1

Answer:

Hi

Explanation:

A- He could hear the train approaching him when he puts his hear on the railway track because of the vibration the train gave when it rolled on the track

B- No sound cannot travel in vaccum. It meeds a medium to travel

The question is not clear tho.

so I just attempted in explaining those two statements.

Hope it helps you!