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ak127a
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Homework Statement
A spherical surface of roc 10 cm separates 2 media x and y of refractive indices 3/2 and 4/3 respectively. Centre of the spherical surface lies in the denser medium. An object is placed i x medium. For image to be real, the object distance must be ----
A) >90 cm
B) <90 cm
C) >80 cm
D) <80 cm
Homework Equations
- i don't know relevant questions[/B]The Attempt at a Solution
I used the formula u2/v - u1/u = (u2 - u1)/R. Where u2= 3/2 and u1= 4/3. But i don't think that that is right.