1
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
For the given incident ray as shown in figure, the condition of total internal refraction of this ray the required refractive index of prism will be

AIPMT 2002 Physics - Geometrical Optics Question 31 English
A
$${{\sqrt 3 + 1} \over 2}$$
B
$${{\sqrt 2 + 1} \over 2}$$
C
$$\sqrt {{3 \over 2}} $$
D
$$\sqrt {{7 \over 6}} $$
2
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.
3
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
4
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.
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