Tag: physics
Questions Related to physics
A ray of unplorised incident on a glass plate at the polarising angle $57^{o}$. Then
The critical angle for a medium is $ 45^o $ What is polarising angle? Angle refraction ?
When sun light is incident on water at an angle of $ 53^o $ the reflected light is found to be completely plane-polarised. Determine : (i) angle of refraction of light,
(ii) refractive index of water.
The angle between polariser and analyser is $30 ^ { \circ }$ The ratio of intensity of incident light and transmitted by the analyser is
The angle of incidence of light is equal to Brewster's angle, then
A) Reflected ray is perpendicular to refracted ray
B) Reflected ray is parallel to refracted ray
C) Reflected light is polarized having its electric vector in the plane of incidence
D) Refracted light is polarized.
A beam of unpolarised light of intensity $I _{0}$ is passed through a polaroid $A$ and then through another polaroid $B$ which is oriented so that its principal plane makes an angle of $45^{\circ}$ relative to that of $A$. The intensity of the emergent light is
Polarizing angle for water is $53^o4'$. If light is incident at this angle on the surface of water and reflected the angle of refraction is:
Through which character we can distnguish the light waves from sound waves.
In the propagation of light waves, the angle between the direction of vibration and plane of polarization is :
A stretched string is 1 m long. Its mass per unit length is 0.5 g/m. It is stretched with a force of 20 N. It plucked at a distance of 25 cm from one end. The frequency of note emitted by it will be: