PART - 1 CH - 5Work, Energy and Power — Physics STD 11 Science — Question

Newton's formula for velocity of sound in gases is _______.

Ideally a ............. is a body with a perfectly definite and unchanging shape. The distances between all pairs of particles of such a body do not change.

In simple harmonic motion, the restoring force is proportional to the displacement from the equilibrium position and in the opposite direc- tion, ie. F = ____________.

Two sound waves of slightly different frequency moving in the same direction give rise to _______.

The apparent frequency in Doppler's effect does not depend upon _______.

Electromagnetic and Gravitational forces are always act along the line joining two body, this implies their ______ nature.

Bernoulli's principle for streamline flow of fluid obeys law of _______________________.