Q11 of 34 Page 227

Thunder is heard after lighting. Give reasons.

Thunder is heard after lighting because lights travels much faster (3 x 108 m/s) than sound (about 330 m/s).


More from this chapter

All 34 →
9

Differentiate infrasonic sounds and ultrasonic sounds.

 10

The moment we put our ear to the railway line, we can hear the sound of an approaching train even when the train is far off but its sound cannot be heard through the air. Why?

 12

Why are the voices of men and women different?

 13

How is musical sound differ from noise?