A) \[{{f}_{1}}\le {{f}_{2}}\]
B) \[{{f}_{1}}={{f}_{2}}\]
C) \[{{f}_{1}}<{{f}_{2}}\]
D) \[{{f}_{1}}>{{f}_{2}}\]
Correct Answer: D
Solution :
If one of the lens is convex and the other is concave, then it behaves like concave lens, if\[{{f}_{1}}>{{f}_{2}}\]and it behaves like a convex lens if\[{{f}_{1}}<{{f}_{2}}\]. And it behave like a plane mirror if\[{{f}_{1}}={{f}_{2}}\].
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