Ray Optics and Optical Instruments questions
782 published questions with worked solutions.
- The refractive index of the material of a prism is 2 and its refracting angle is 30^ . One of the refracting surfaces of the...
- A microscope is focused on a mark on a piece of paper and then a slab of glass of thickness 3 cm and refractive index 1.5 is...
- A convex lens and a concave lens, each having same focal length of 25 cm, are put in contact to form a combination of lenses. The...
- The frequency of a light wave in a material is 2 10^ 14 Hz and wavelength is 5000 . The refractive index of material will be
- Two thin lenses of focal lengths f_1 and f_2 are in contact and coaxial. The power of the combinations is
- A boy is trying to start a fire by focusing Sunlight on a piece of paper using an equiconvex lens of focal length 10 cm. The...
- The speed of light in media M_1 and M_2 are 1.5 10^8 m/s and 2.0 10^8 m/s respectively. A ray of light enters from medium M_1 to...
- A ray of light is incident on a 60^ prism at the minimum deviation position. The angle of refraction at the first face (i.e.,...
- A ray of light travelling in a transparent medium of refractive index , falls on a surface separating the medium from air at an...
- A lens having focal length f and aperture of diameter d forms an image of intensity I. Aperture of diameter d2 in central region...
- A thin prism of angle 15^ made of glass of refractive index _1 = 1.5 is combined with another prism of glass of refractive index...
- A converging beam of rays is incident on a diverging lens. Having passed through the lens the rays intersect at a point 15 cm...
- Which of the following is not due to total internal reflection?
- A biconvex lens has a radius of curvature of magnitude 20 cm. Which one of the following options describe best the image formed...
- A rod of length 10 cm lies along the principal axis of a concave mirror of focal length 10 cm in such a way that its end closer...
- For the angle of minimum deviation of a prism to be equal to its refracting angle, the prism must be made of a material whose...
- When a biconvex lens of glass having refractive index 1.47 is dipped in a liquid, it acts as a plane sheet of glass. This implies...
- The magnifying power of a telescope is 9. When it is adjusted for parallel rays the distance between the objective and eyepiece...
- A concave mirror of focal length f_1 is placed at a distance of d from a convex lens of focal length f_2. A beam of light coming...
- A plano convex lens fits exactly into a plano concave lens. Their plane surfaces are parallel to each other. If lenses are made...
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