Physics
When a ray of light enters from a denser medium to a rarer medium then:
- the light ray bends towards the normal
- the speed of light increases
- the angle of incidence is greater than the angle of refraction
- its wavelength decreases.
Related Questions
Heat capacity of a body is:
- the energy needed to melt the body without the change in its temperature.
- the energy needed to raise the temperature of the body by 1°C
- the increase in the volume of the body when its temperature increases by 1°C
- the total amount of internal energy that is constant.
(a) Name the principle on which a lever works.
(b) Which radiations that are emitted during the decay of a nucleus, having highest penetrating power?
(c) Does the emission of the above-mentioned radiation result in a change in the mass number?
An endoscope uses optical fiber to transmit high resolution images of internal organs without loss of information. The phenomenon of light that governs the functioning of the optical fiber is:
- refraction
- reflection
- scattering
- total internal reflection
The amount of heat energy required to melt a given mass of a substance at its melting point without rise in its temperature is called:
- specific heat capacity
- specific latent heat of fusion
- latent heat of fusion
- specific latent heat of freezing