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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

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