Which of the folowing statements about light travelling f...
Which of the folowing statements about light travelling from one material medium to another is not correct?
The refracted angle is less than the incident angle if the speed is higher in the first material
Its wavelength does not change
It bends away from the normal if the speed is lower in the first material
Its frequency changes.
Correct answer is D
Refraction occurs when light travels from one medium to another which changes the speed at which the light travels.
This causes light to bend upon incidence with the interface of a new material.
Angle of refraction is smaller than angle of incidence when light ray travels from rarer medium to denser medium.
I.e light can either refract towards the normal(when slowing down while crossing the boundary) or away from the normal (when speeding up while crossing the boundary).
When light undergoes refraction, its frequency remains the same.
One major reason why electrical appliances in homes are normally earthed is that the----------- ...
I. reproducibility II. Sensibility III. High terminal capacity iv. High accuracy The quantities ...
In an A.C circuit, the ratio of r.m.s value to peak value of current is ...
The following are some units I. Ns II. Non III. Nm−2 IV. J°K−1 V. JKg\(^{-1}\...
Dewpoint is the temperature at which, water vapour in the atmosphere ...
A football is kicked at an angle of 45° to the horizontal over a defense line up with a velocity...