1Is it an objective question or subjective ??
A Glass Slab ( refractive index=μ ) of height "h" is silvered at bottom surface.
There is an air bubble "d" distance below the top surface.
The observer is vertically above the bubble. The apparant distance belween the bubble and its image will be ??
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7 Answers
1Yes, its an objective qus. The options are:-
(a) 2μ (h-d)
(b) 2(h-d)/(μ-1)
(c) d ( 1+1/μ )
(d) 2d/μ
(e) 2(h-d)/μ
Image formed by a mirror (spherical/plane) is independent of medium.
So, Apparant depth of bubble = d/μ
and Apparant depth of image = ( h+ (h-d) )/μ
So the distance between these two comes out to be 2(h-d)/μ
So the correct option is (e) [1]
1@sushma
as observer is seeing frm just above (perpndclr) so it becomes like simple case