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Apparent depth for point object x in all...


Apparent depth for point object x in all three cases are `H_(1),H_(2) & H_(3)` respectively when seen from above given `H=30 cm, n=1.5 &R=3m, ` then

A

0.8 lt `H_(2) -H_(1)`lt0.9

B

`H_(2) gt H_(1)`

C

`H_(2) gt H_(3)`

D

`H_(3) gt H_(1)`

Text Solution

Verified by Experts

The correct Answer is:
B, C

H=30 cm
n=3/2
`H_(1)=H//nimplies (30xx2)/3=20 cm`
Case-II :

R=300cm
`(n_(2))/v-(n_(1))/u=(n_(2)-n_(1))/R`
`1/(-H_(2))-3/(-2xx30)=(1-3/2)/(-300)`
`H_(2)=600/29=20.684 cm `
Case -III

`(n_(2))/v-(n_(1))/u=(n_(2)-n_(1))/R, " " 1/(-H_(3))-3/(-2xx30)=(1-3/2)/300, H_(3) =600/31 =19.354 cm `
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