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NEET 2022 Physics and Chemistry
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© examsnet.com
Question : 49
Total: 100
Two transparent media
A
and
B
are separated by a plane boundary. The speed of light in those media are
1.5
×
10
8
m
∕
s
and
2.0
×
10
8
m
∕
s
, respectively. The critical angle for a ray of light for these two media is
[NEET-2022]
sin
−
1
(
0.500
)
tan
−
1
(
0.500
)
sin
−
1
(
0.750
)
tan
−
1
(
0.750
)
Validate
Solution:
👈: Video Solution
µ
A
=
3
×
10
8
1.5
×
10
8
=
2
µ
B
=
3
×
10
8
2
×
10
8
=
1.5
For TIR, ray of light should travel from denser to rarer medium
µ
A
sin
θ
C
=
µ
B
sin
90
∘
2
sin
θ
C
=
1.5
sin
90
∘
sin
θ
C
=
0.75
θ
C
=
sin
−
1
(
0.75
)
© examsnet.com
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