10. We receive light from the sun but cannot hear the exploding sound produced on its surface due to nuclear reactions. Explain
11. Two men tried to push a heavy box & couldn't succeed. Finally wheels were fitted to the box & now a single man could move it. Justify.
12. Draw and explain the process of electro refining and electroplating.
Dear student
10. As we know that sound needs a medium to travel like air but in space there is no medium through which sound can travel that is the reason by which we are not able to hear sound of explosion but in opposite of this heat and light do not require any medium to travel that is why heat and light can travel in vacuum.
Please post other queries in separate thread or specify the question number.
Regards
10. As we know that sound needs a medium to travel like air but in space there is no medium through which sound can travel that is the reason by which we are not able to hear sound of explosion but in opposite of this heat and light do not require any medium to travel that is why heat and light can travel in vacuum.
Please post other queries in separate thread or specify the question number.
Regards