Ray Optics and Optical Instruments questions
782 published questions with worked solutions.
- Which of the following processes play a part in the formation of a rainbow? (i) Refraction (ii) Total internal reflection (iii)...
- We wish to make a microscope with the help of two positive lenses both with a focal length of 20 mm each and the object is...
- An object 2.4 m in front of a lens forms a sharp image on a film 12 cm behind the lens. A glass plate 1 cm thick, of refractive...
- Light is incident from a medium into air at two possible angles of incidence (A) 20° and (B) 40°. In the medium light travels 3.0...
- The focal length of the objective and the eyepiece of a telescope are 50 cm and 5 cm respectively. If the telescope is focussed...
- The image of an illuminated square is obtained on a screen with the help of a converging lens. The distance of the square from...
- This question has Statement-1 and Statement-2. Of the four choices given after the Statements, choose the one that best describes...
- A printed page is pressed by a glass of water. The refractive index of the glass and water is 1.5 and 1.33, respectively. If the...
- A diver looking up through the water sees the outside world contained in a circular horizon. The refractive index of water is 43,...
- The focal lengths of objective lens and eye lens of a Galilean Telescope are respectively 30 cm and 3.0 cm. Telescope produces...
- An object is located in a fixed position in front of a screen. Sharp image is obtained on the screen for two positions of a thin...
- In a compound microscope the focal length of objective lens is 1.2 cm and focal length of eye piece is 3.0 cm. When object is...
- A ray of light is incident from a denser to a rarer medium. The critical angle for total internal reflection is _ iC and...
- A beam of polychromatic light passes through a thin prism of prism angle 6^ . The refractive index of the material of the prism...
- In a concave lens, a ray of light emanating from the object parallel to the principal axis of the lens after refraction:
- A telescope has an objective lens of focal length 150 cm and an eyepiece of focal length 5 cm. If a 50 m tall tower at a distance...
- You are asked to design a shaving mirror assuming that a person keeps it at 10 cm from his face and views the magnified image of...
- An observer looks at a distant tree of height 10 m with a telescope of magnifying power of 20. To the observer, the tree appears
- A diverging lens with magnitude of focal length 25 cm is placed at a distance of 15 cm from a converging lens of magnitude of...
- Let the refractive index of a denser medium with respect to rarer medium be n_ 12 and its critical angle be _C. At an angle of...
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