A convex lens of focal length 12 cm is made of glass of \[\mu =\frac{3 – McqOptions

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1.	A convex lens of focal length 12 cm is made of glass of \[\mu =\frac{3}{2}\]. What will be its focal length when immersed in liquid of \[\mu =\frac{5}{4}\] [MP PMT 1995, 2003]
A.	6 cm
B.	12 cm
C.	24 cm
D.	30 cm
Answer» B. 12 cm

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