1.5
2.5
1.8
2
The critical angle of a glass slab increases with
The density of a gas is maximum at
The density of the liquid when heated
The density of water is 1 g/cc. This is strictly valid at
The device used for locating submerged objects under sea is.
The device used for measuring the wavelength of X-rays is
The device used to change the speed of an electric fan is
The device used to convert solar energy into electricity is
The device which converts AC to DC is
The device which converts sound energy into electrical energy is called
