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Grade: 12

                        

an equiconvex lens of glass (refractive index=1.5) of focal length 10cm is silvered on one side. it will behave like: a) concave mirror of focal length 10cm b) convex mirror of focal length 5cm c) concave mirror of focal length 2.5cm d) convex mirror of focal length 20cm

6 years ago

Answers : (2)

Nirmal Singh.
askIITians Faculty
44 Points
							It will behave like aconcave mirror of focal length 10cm because its a convex lens if both surface have same radius.

Regards,
Nirmal Singh
Askiitians Faculty
6 years ago
vaanya
18 Points
							but the answer is concave mirror of 2.5cm. i want to know how to solve it.
						
6 years ago
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