Ray Optics and Optical Instruments questions
782 published questions with worked solutions.
- Two thin lenses of focal lengths 20 cm and 25 cm are placed in contact. The effective power of the combination is
- We combined a convex lens of focal length f_1 and a concave lens of focal length f_2 and their combined focal length was F. The...
- A ray of light is incident at an angle of 60^ on one face of a prism of angle 30^ . The ray emerging out of the prism makes an...
- When light rays are incident on a prism at an angle of 45^ , the minimum deviation is obtained. If refractive index of the...
- A ray of light passes through an equilateral glass prism in such a manner that the angle of incidence is equal to the angle of...
- In a thin prism of glass (refractive index 1.5), which of the following relations between the angle of minimum deviations _m and...
- The refractive index of a prism for a monochromatic wave is 2 and its refracting angle is 60^ . For minimum deviation, the angle...
- The angle of minimum deviation for a prism of refractive index 1.5 is equal to the angle of the prism. The angle of prism is...
- When light of wavelength is incident on an equilateral prism kept in its minimum deviation position, it is found that the angle...
- Under minimum deviation condition in a prism, if a ray is incident at an angle 30^ , then the angle between the emergent ray and...
- Two beams of red and violet colours made to pass separately through a prism (A = 60^ ). In the minimum deviation position, the...
- A ray of light passing through a prism of refraction angle 60^ has to deviate by at least 30^ . Then refractive index of prism...
- A ray of light is incident at 60^ on one face of a prism of angle 30^ and the emergent ray makes 30^ with the incident ray. The...
- A prism having refractive index 1.414 and refracting angle 30^ has one of the refracting surfaces silvered. A beam of light...
- For an angle of incidence on an equilateral prism of refractive index 3 , the ray refracted is parallel to the base inside the...
- An equilateral prism deviates a ray through 45^ for the two angles of incidence differing by 20^ . The angle of incidence is
- Dispersive power depends upon
- An object is placed at a distance U from a simple microscope of focal length f. The angular magnification obtained depends
- Magnifying power of a simple microscope is (when final image is formed at D = 25 cm from eye)
- In a compound microscope the intermediate image is
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