26 Nov 2016

A convex lens is placed in water, its focal length :

A] Increases
B] Decreases
C] Remains the same
D] Doubled
SALES ASSISTANT GRADE II; JUNIOR ASSISTANT/CASHIER/TIME KEEPER/ASSISTANT STORE KEEPER; EXCISE INSPECTOR TRAINEE 2016
DO You Know The Answer ? If Do so please write and Check out Your answer with the Following answer

Increases

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