Question

Multiple choice questions
to bosqe
a) 0°
c) 30°
1. Which of the following is Snell's law.
[a ]
a) n, sin i=sin r/n,
b)n,/n, =sin r/sin i
c)n/n, = sin r/sini
d) n, sin i=constant
2. The refractive index of glass with respect to air is 2. Then the critical angle of glass-air interface
is ....
[ ]
b) 45°
d) 60°
3. Total internal reflection takes place when the light ray travels from......... [ ]
a) rarer to denser medium
b) rarer to rarer medium
c) denser to rarer medium
d) denser to denser medium
4. If the angle of incidence is equal to critical angle, then the angle of refraction is [ ]
b) 20°
c) 90°
d) 180°
5. Mirage is a best example for the phenomenon of
[ c
a) Reflection b) Refraction
c) Total internal reflection d) Shift
6. Refractive indices of Ice, Benzene, Ruby and Kerosene are 1.31, 1.50, 1.71 and 1.44
respectively. In which of the above media, light travels showly?
[ ]
b) Benzene
c) Ruby
d) Kerosene
a) 0°
a) Ice
Free distribution by T.S. Government 2020-21
63
help me please​

Answer 1

Answer:

choice questions

to bosqe

a) 0°

c) 30°

1. Which of the following is Snell's law.

[a ]

a) n, sin i=sin r/n,

b)n,/n, =sin r/sin i

c)n/n, = sin r/sini

d) n, sin i=constant

2. The refractive index of glass with respect to air is 2. Then the critical angle of glass-air interface

is ....

[ ]

b) 45°

d) 60°

3. Total internal reflection takes place when the light ray travels from......... [ ]

a) rarer to denser medium

b) rarer to rarer medium

c) denser to rarer medium

d) denser to denser medium

4. If the angle of incidence is equal to critical angle, then the angle of refraction is [ ]

b) 20°

c) 90°

d) 180°