Latest IIT-JEE Aptitude Question SOLUTION: Diameter of a plano-convex lens is 6 cm and thickness at the centre is 3 mm. If speed of light in material of lens is 2 × 10^8 m/s, the focal length of the lens is - (1) 30 cm (2)

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(#M40027796) IIT-JEE question 2011 question Keep an EYE

Diameter of a plano-convex lens is 6 cm and
thickness at the centre is 3 mm. If speed of light in
material of lens is 2 × 10^8 m/s, the focal length of
the lens is -
(1) 30 cm (2) 10 cm
(3) 15 cm (4) 20 cm

Asked In IIT-JEE MAN (11 years ago)

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