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JEE Mains Model Paper 18

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Question : 30 of 90

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A beaker contains water (µ=

) filled to a height of 32 cm.A concave mirror is fixed 6 cm above the surface of wateras shown in figure. An object is placed at the bottom ofbeaker and the final image is formed 14 cm below thesurface of water. The focal length of the mirror is

8 cm
12 cm
16 cm
20 cm

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