Pitch of the sound depends on the frequency [Higher frequency -> Higher pitch] Loudness of the sound depends on the amplitude [Higher...

Using the formula n = 1/sin c, the higher the n , the smaller the c . With smaller c , total internal reflection can occur over a wider...

Work done W = F x d Only when there is distance moved in the direction of the force , there is work done. (i.e. look for the distance...