Question

JO,
wolltumvu
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14. Two plano concave lenses of glass of refractive index 1.5 have radii of curva-
ture 20 cm and 30 cm respectively. They are placed in contact with the curved
surfaces towards each other and the space between them is filled with a liquid of
refractive index 5/2. Find the focal length of the
combination
1) 6 cm
2) - 92 cm
3) 108 cm
4) 12 cm
MI=1.5.
M2 - 1.33​

Answer 1

Answer:

iska answer 108 hoga

Explanation:

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