Question

a glass rod of refractive index 1.42 is immersed in kerosene of refractive index 1.42 . the rod will be :

a) become visible

b) appear bent

c) appear raised in the liquid

d) appear as a plate

e) none of these

and WHY ?????

Answer 1

(B) APPEAR BENT BECAUSE IT WILL PASS FROM LESS DENSE MEDIUM TO MORE DENSE MEDIUM AND HENCE BEND TOWARDS THE NORMAL AND THEREFORE APPEAR BEND.

HOPE IT WILL HELP YOU

Answer 2

When a glass rod of refractive index 1.42 is immersed in kerosene of refractive index 1.42, the rod will be invisible.  

This is because the transmittance is the incident light which is passes through the medium at a certain wavelength.  

Here the rod and kerosene has same refractive index therefore   the rod will not be visible inside the oil. Overall (e) is correct answer as none of these options are correct here.