A large square container with thin transparent vertical walls and filled with water (refractiveindex) is kept on a horizontal table. A student holds a thin straight wire vertically inside theşAwater 12 cm from one of its corners, as shown schematically in the figure. Looking at the wire fromthis corner, another student sees two images of the wire, located symmetrically on each side of theline of sight as shown. The separation (in cm) between these images isLine of sight12cm
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Answer:
Assume that observer see the image of object through edge ⇒a=45
∘
AB=
cosα
12dα
=
cosθ
xdθ
Applying snell's law
3
4
sina=1.sina
3
4
cosa da=cosθ dθ
⇒
cos
2
α
9
=
cos
2
θ
x
1.sinθ=
3
4
sinα
⇒sinθ=
3
2
2
⇒x=18×
9
1
=2
d=2×sin(θ−α)
=4×
2
1
(
3
2
2
−
3
1
)=
3
8−2
2
=1.73≈2
Explanation:
jai shree ram ⬅⬅⬅⬅✔
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