A thin convex lens L (refractive index =1.5) is placed on a plane mirror M. When a pin is placed at A, such that OA = 18 cm, its real inverted image is formed at A itself, as shown in figure. When a liquid of refractive index \mu_l is put between the lensand the mirror, the pin has to be moved to A', such that OA'=27 cm , to get its inverted real image at A' itself. The value of \mu_l will be: [9 Apr 2019 Shift 2]

Ray Optics and Optical Instruments Part 1

Section: Physics

Question : 46 of 100

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A thin convex lens L (refractive index =1.5) is placed on a plane mirror M. When a pin is placed at A, such that OA = 18 cm, its real inverted image is formed at A itself, as shown in figure. When a liquid of refractive index µl is put between the lensand the mirror, the pin has to be moved to A′, such that OA′=27 cm , to get its inverted real image at A' itself. The value of µl will be:

[9 Apr 2019 Shift 2]

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