1
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
A disc is placed on a surface of pond which has refractive index 5/3. A source of light is placed 4 m below the surface of liquid. The minimum radius of disc needed so that light is not coming out is,
A
$$\infty $$
B
3 m
C
6 m
D
4 m
2
AIPMT 2000
MCQ (Single Correct Answer)
+4
-1
A bubble in glass slab ($$\mu $$ = 1.5) when viewed from one side appears at 5 cm and 2 cm from other side, then thickness of slab is
A
3.75 cm
B
3 cm
C
10.5 cm
D
2.5 cm.
3
AIPMT 2000
MCQ (Single Correct Answer)
+4
-1
Rainbow is formed due to
A
scattering and refraction
B
internal reflection and dispersion
C
reflection only
D
diffraction and dispersion.
4
AIPMT 2000
MCQ (Single Correct Answer)
+4
-1
For a plano convex lens ($$\mu $$ = 1.5) has radius of curvature 10 cm. It is silvered on its plane surface. Find focal length after silvering
A
10 cm
B
20 cm
C
15 cm
D
25 cm
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