A diverging lens has a focal length of 0.10 m. The power of this lens will be:
A convex lens has 9 cm focal length and a concave lens has – 18 cm focal length. The focal length of the combination in contact will be
A converging lens has a focal length of 50cm. The power of this lens is :
A lens produces a magnification of -0.5. Is this a converging or diverging lens? If the focal length of the lens is 6 cm, draw a ray diagram showing the image formation in this case.
What is the power of a convex lens whose focal length is 80 cm?
A convex lens of focal length 10 cm is placed in contact with a concave lens of focal length 20 cm. The focal length of this combination of lenses will be:
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 focal length 20 cm . A beam of parallel light falls on the diverging lens. The final image formed is.
LAKHMIR SINGH & MANJIT KAUR-REFRACTION OF LIGHT-VERY SHORT ANSWER TYPE QUESTIONS
