1
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
Optical fibre are based on
A
total internal reflection
B
less scattering
C
refraction
D
less absorption coefficient.
2
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
3
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.
4
AIPMT 2000
MCQ (Single Correct Answer)
+4
-1
A tall man of height 6 feet, want to see his full image. Then required minimum length of the mirror will be
A
12 feet
B
3 feet
C
6 feet
D
any length

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