An insect at point ' \( \mathrm{P} \) ' sees its two images in the ...

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An insect at point ' \( \mathrm{P} \) ' sees its two images in the water mirror system as shown in the figure. One image is formed due to direct partial reflection from water surface and the other image is formed due to refraction, reflection \& again refraction by water mirror system in order. Find the separation (in \( \mathrm{cm} \) ) between the two images. Mirror M has focal length \( 60 \mathrm{~cm} \). [Take \( \mu_{\mathrm{w}}=4 / 3 \) ]
\( \mathrm{P} \)
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