Question

. A light ray passes from glass slab if the angle of incidence is 30 degree and one angle of refraction is 20 degree then the value of angle of refraction 2 and angle of emergent is respectively *

2 points

r2 = 40degree e =30 degree

r2 = 20 degree e = 30 degree

r2 = 15 degree e = 25 degree

None of these​

Answer 1

Answer:

none of these

Explanation:

Given ,

n

ag

=

2

3

∠i=30

0

From snell's law

n=

sinr

sini

By putting values of n, i in equation

we get

2

3

=

sinr

sin30

0

⇒sinr=

3

1

r=19

0

47

′

≃20

0

the angle of refraction is 20 degree.

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Answer 2

Answer:

yaa

Explanation:

12×40 karo Jo answer aata hai usse kuch Matlab mat rakho padhai likhai karo ais yyes banno desh ka naam Roshan karo