Question

A .............. lens always produce virtual and diminished image.
biconvex
(B) biconcave
planoconvex
(D) bifocal​

Answer 1

A biconcave lens always produces a virtual and diminished image.

What is the biconcave lens and how does it work?

• A lens having two concave lenses together is called a biconcave lens.
• In a biconcave lens, the two lenses have equal lengths of the radius of curvature on both sides of the lens and diverge the light path falling on them.
• The major difference between a biconcave and concave lenses is that both surfaces are concave and the light beam gets reflected in a biconcave lens.
• While in a concave lens one surface is concave and the other one is plane.

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