A convex mirror of focal length 10 cm is placed in water- The refractive index of water is 4-3- What will be the focal length of the mirror in waterA- 30-4 cmB- 10 cmC- None of theseD- 40-3 cm

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A convex mirror of focal length 10 cm is placed in water. The refractive index of water is $\frac{4}{3}$ . What will be the focal length of the mirror in water

10 cm

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\frac{40}{3} c m

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\frac{30}{4} c m

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None of these

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10 c m

\frac{4}{3}

f_{1}

f_{2}

= \frac{4}{3}

f

(μ = \frac{4}{3})

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