The correct option is C 3.5 cm
Apparent shift through a transparent medium of refractive index μ is given by s=t(1−1μ)Where,
t= thickness of the transparent medium.
According to problem, for first medium:
t1=8 cm,μ1=43
So, shift due to first medium, ⇒s1=t1(1−1μ1)=8(1−14/3)=2 cm
For second medium:
t2=4.5 cm, μ2=32
so. shift due to this medium,
⇒s2=t2(1−1μ2)=4.5(1−13/2)=1.5 cm
Total shift is of the coin be
S=s1+s2=2+1.5=3.5 cm
Hence, option (d) is the correct answer.
Why this question?To understand the difference betweenapparent depth & apparent shift.