Ray Optics and Optical Instruments questions
782 published questions with worked solutions.
- Blue colour of sea water is due to
- The air bubble in water shines more because of
- The laws of reflection of light are valid for
- The angle between incident ray and reflecting surface is :
- We can see object due to :
- A light ray incident at an angle of 30° on a plane mirror, reflects from the mirror. The deviation produced by mirror on the ray...
- A ray is reflected at an angle of 30°. If the angle of incidence becomes double. Then the angle of reflection will be :
- A plane glass slab is kept over various coloured letters, the letter which appears least raised is
- When light enters from air to water, then its
- Critical angle for a transparent denser medium is 45^ . The refractive index of medium is
- In a medium, different colours of light travel with
- A ray of light passes through a plane glass slab of thickness t and refractive index . The angle between the incident and...
- Light passes from air into a liquid. The angle of incidence is 60^ . The deviation produced is 15^ . The refractive index of the...
- If the refractive index of water is 4/3 and that of glass is 5/3, then the critical angle of light entering from glass into water...
- Velocity of light in diamond is 5 12 th that in air. Velocity of light in water is 34th that in air. The angle of incidence of a...
- Time taken by the sunlight to pass through a window of thickness 4 mm and refractive index 1.5 is
- A ray of light strikes a glass plate at an angle of 60^ . If the reflected and refracted rays are perpendicular to each other,...
- A ray of light travelling in air has wavelength , frequency n, velocity v and intensity I. If this ray enters into water then...
- When a ray of light enters a medium of refractive index , then it is observed that the angle of refraction is half the angle of...
- Light of wavelength 7200 Å in air has wavelength in glass ( = 1.5) equal to
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