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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:

An object is placed on the principal axis of a convex lens of focal length 12 cm, at a distance magnification produced by the lens is ______and the image is_______?
ലെൻസിന്റെ പവർ അളക്കുന്ന യൂണിറ്റ് :
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).
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 forms a real and inverted image twice the size of the object. The magnification produced by the lens is equal to?