Unpolarized light with intensity `I_0` is incident on two polaroids. The axis of the first polaroid makes an angle of `50^@` with the vertical, and the axis of the second polaroid is horizontal. What is the intensity of the light, after it has passed through the second polaroid?

When a polaroid is rotated, the intensity of light is not found to vary. The incident light may be

When a polaroid is rotated, the intensity of light is not found to vary. The incident light may be

Unpolarised light of internsity 32 Wm^(-2) passes through three polarisers such that the transmission axis of the last polariser is crossed with the first. If the intensity of emerging light is 2 Wm^(-2) , the angle between the transmission axes o the first two polarisers is

A clear sheet of polaroid is placed on top of a similar sheet so that axews make an angle of sin^(-1) (4/5) with each other. The ratio of intensity of the emergent light to that of polarised light is

Unpolarized light of intensity I_0 is made to pass through three polarizers P_1, P_2 and P_3 successively. The polarization axis of P_2 makes an angle of theta_1 with that of P_1 , while that of P_3 makes an angle theta_2 with that of the P_2 . What will be the intensity of light coming out of P_3 ?

A beam of red light has an amplitude 2.5 times the amplitude of second beam of the same colour. Calculate the ratio of the intensities of the two waves?

Unpolarised light falls on two polarising sheets placed one on top of the other. What must be the angle between the characteristic directions of the sheets if the intensity of the final transmitted light is one-third the maximum intensity of the first transmitted beam?

Unpolarised light falls on two polarizing sheets placed one on top of the other. What must be the angle between the characteristic directions of the sheets if the intensity of the final transmitted light is one-third the maximum intensity of the first transmitted beam?