Question

PHASE - I FUN BOOK
PHYSICS
12. X: The light ray must travel from denser medium to rarer medium to form total internal Reflection
Y: The angle of incidence in denser medium should be greater than the critical angle for the pair of
media in contact
[ 1
A) X and Y are true
B) X is True and Y is False
C) X is False and Y is True
D) Both X and Y are False
13. Shamtaz curie is doing an experiment with the glass slab. She focussed the light towards the glass slab at
an angle 30°. What would be the angle of emergence ?
1
A) OP
B) 30
C) 90°
D) 180°
14. Find the refractive index of the glass, if the speed of light in glass is 2 x 10 m/s and speed of light in
vacuum is 3 x 10 m/s
A m's B) mis 0)
15. Among of the following is not correct for diamond
A) Critical angle of diamond is high
B) Refractive index of diamond is high
C) Total internal reflection takes place in diamond D) Diamonds are used in jewellery
PLEASE ANSWER TJE QUESTIONS FAST​

Answer 1

Answer:

12-A

13-90

14-ms

15-total internal reflection takes place in diamond