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Q1. The sound level 23.30 m from a loudspeaker is 67.3 dB. What is the rate at which sound energy is produced by the loudspeaker, assuming it to be an isotropic source?

Q2. Two objects have masses m and 5m respectively.
They both are placed side by side on a frictionless inclined plane and allowed to slide down from rest.

A) It takes the lighter object 5 times longer to reach the bottom of the incline than heavier.

B) It takes the lighter object 10 times longer to reach the bottom of the incline than heavier.

C) It takes the heavier object 5 times longer to reach the bottom of the incline than lighter.

D) It takes the heavier object 10 times longer to reach the bottom of the incline than lighter.

E) The two objects reach the bottom of the incline at same time

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