NEET Physics Ray Optics and Optical Instruments Questions Solved


An air bubble in sphere having 4 cm diameter appears 1 cm from surface nearest to eye when looked along diameter. Ifμga = 1.5, the distance of bubble from refracting surface is

(a) 1.2 cm                    (b) 3.2 cm

(c) 2.8 cm                    (d) 1.6 cm

(a) v=1 cm, R=2 cm

              

       μ2v-μ1u=μ2-μ1R

       1-1-1.5u=1-1.5-2

        u=-1.2 cm

Difficulty Level:

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