A spherical surface of radius of curvature 10cm separates two medium X and Y of refractive indices 43 and 32 respectively. If the object is placed along principal axis in medium X, then
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a
Image is always real.
b
Image is real if the object distance is greater than 90 cm.
c
Image is always virtual.
d
Image is virtual if the object distance is less than 90 cm.
answer is C.
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Detailed Solution
For spherical surface ,μyV-μxU=μy-μxRHere R and U are negative. So to make the Limits of the above equation, V must always be negative.