Which of the following statements are correct? (i) Sound is produced by vibrations. (ii) Sound requires a medium for propagation. (iii) Light and sound both require a medium for propagation. (iv) Sound travels slower than light.

Question

Philoid · Accepted Answer

Option (iii) is incorrect. As light do not need any medium for propagation. It can also travel in vacuum too. On the other hand, sound needs a medium for propagation. All other options are correct.

Which of the following statements are correct?(i) Sound is produced by vibrations.(ii) Sound requires a medium for propagation.(iii) Light and sound both require a medium for propagation.(iv) Sound travels slower than light.

Which of the following statements are correct?
(i) Sound is produced by vibrations.

(ii) Sound requires a medium for propagation.

(iii) Light and sound both require a medium for propagation.

(iv) Sound travels slower than light.