HARD
JEE Main
IMPORTANT
Earn 100
A polarizer - analyser set is adjusted such that the intensity of light coming out of the analyser is just of the original intensity. Assuming that the polarizer - analyser set does not absorb any light, the angle by which the analyser needs to be rotated further, to reduce the output intensity to zero, is
47.62% studentsanswered this correctly
Important Questions on Wave Optics
HARD
JEE Main
IMPORTANT
Visible light of wavelength falls normally on a single slit and produces a diffraction pattern. It is found that the second diffraction minimum is at from the central maximum. If the first minimum is produced at then is close to
HARD
JEE Main
IMPORTANT
In a Young’s double slit experiment, the separation between the slits is . In the experiment, a source of light of wavelength is used and the interference pattern is observed on a screen kept away. The separation between the successive bright fringes on the screen is:
MEDIUM
JEE Main
IMPORTANT
In a double – slit experiment, at a certain point on the screen the path difference between the two interfering waves is of a wavelength. The ratio of the intensity of light at that point to that at the center of a bright fringe is:
MEDIUM
JEE Main
IMPORTANT
The aperture diameter of a telescope is . The separation between the moon and the earth is . With light of wavelength of , the minimum separation between objects on the surface of moon, so that they are just resolved, is close to:
HARD
JEE Main
IMPORTANT
In a Young's double slit experiment fringes are observed on a small portion of the screen when light of wavelength is used. Ten fringes are observed on the same section of the screen when another light source of wavelength is used. Find the value of (in ) .
MEDIUM
JEE Main
IMPORTANT
The figure shows a Young's double slit experimental setup. It is observed that when a thin transparent sheet of thickness t and refractive index is put in front of one of the slits, the central maximum gets shifted by a distance equal to n fringe width. If the wavelength of light used is then will be:
EASY
JEE Main
IMPORTANT
Diameter of the objective lens of a telescope is For light of wavelength coming from a distant object, the limit of resolution of the telescope is close to:
MEDIUM
JEE Main
IMPORTANT
Two coherent sources produce waves of different intensities which interfere. After interference, the ratio of the maximum intensity to the minimum intensity is The intensity of the waves are in the ratio:
