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One end of a cylindrical glass rod (mu =...

One end of a cylindrical glass rod (mu = 1.5) of radius 1.0 cm is rounded in the shape of a hemisphere. The rod is immersed in water (mu= 4/3) and an object is placed in the water along the axis of the rod at a distance of 8.0 cm from the rounded edge. Locate the image of the object.

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The correct Answer is:
A
Here `u=8cm, v=-8cm`

`mu_1=4/3`
`mu_2=3/2`
`mu_2/v-mu_1/u=(mu_2-mu_1)/r`
`3/(2v)-4/(-3x8)=(3/2-4/3)/1`
`3/(2r)+1/6=1/6`
`=3/(2v)=0rarr =oo`
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