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A lens having power 8 D is kept in contact with another lens having power -4 D. The lens combination will act as a?

Aconcave lens having focal length 25 cm

Bconcave lens having focal length 50 cm

Cconvex lens having focal length 25 cm

Dconvex lens having focal length 50 cm

Answer:

C. convex lens having focal length 25 cm

Read Explanation:

  • The lens combination acts as a convex lens with a focal length of 25cm

Related Questions:

______ mirror is used in motor vehicles as rear view mirror.
An object. 3.0 cm in height, is placed at a distance of 20.0 cm in front of a convex mirror of focal length 6.0 cm. on its principal axis. Its image has a height of _______and is_____?
A convex lens produces a magnification of-3 for an object placed at 1.5 m from the leas. Find the image distance (with correct sign).
Power of a lens is 10 D, its focal length is :
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