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CBSE Class 12-science Answered

A convex lens of refractive index 1.5 has a focal length of cm in air. Calculate the change in its focal length when it is immersed in water of refractive index Syntax error from line 1 column 49 to line 1 column 73. Unexpected '<mstyle '.
Asked by Topperlearning User | 07 Jul, 2014, 06:21: PM
answered-by-expert Expert Answer

 

Reflective index of convex lens in air, μ= 1.5

Focal length of convex lens fa = 18 cm

Reflective index of water, μ' = Syntax error from line 1 column 49 to line 1 column 73. Unexpected '<mstyle '.

Syntax error from line 1 column 49 to line 1 column 73. Unexpected '<mstyle '.

Where R1 and R2 are the radius of curvature of the convex lens

Syntax error from line 1 column 49 to line 1 column 73. Unexpected '<mstyle '.

When the lens is in water

Syntax error from line 1 column 49 to line 1 column 73. Unexpected '<mstyle '.

Where Syntax error from line 1 column 49 to line 1 column 55. Unexpected '<msub>'.is the focal length of the lens, when immersed in water

Syntax error from line 1 column 49 to line 1 column 73. Unexpected '<mstyle '.

Change on focal length =Syntax error from line 1 column 49 to line 1 column 55. Unexpected '<msub>'. = 72 cm - 18 cm = 54 cm

 

Answered by | 07 Jul, 2014, 08:21: PM
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