Diameter of a plano-convex lens is 6 cm and thickness at the centre is 3 mm. If the speed of light in the material of the lens is 2 x10^8 m/s the focal length of the lens is

Question:

Diameter of a plano-convex lens is 6 cm and thickness at the centre is 3 mm. If the speed of light in the material of the lens is 2 x10⁸ m/s the focal length of the lens is

Options :

(a) 15 cm
(b) 20 cm
(c) 30 cm
(d) 10 cm

Answer :

Answer Steps :

step 1

step 2

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Related Questions

The kinetic energy of a particle executing a linear SHM is 16 J, when it is in the mean position. If the amplitude is 25 cm, periodic time of the particle in second is (Mass of the particle = 51.2 g)

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