Three students X, Y and Z observed the refraction of light
through a glass slab (from air medium to glass slab) by
passing a ray of light at an angle of incidence 450.
The angle of refraction and the angle of emergence
respectively as observed by them is given above
Whose observation is correct? Why?
d)‘The refractive index of diamond is 2.42’. What is the
meaning of this statement in relation to speed of light?
plsssss answer plsss answer
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Answer:
The angle of incidence for first surface (air-glass interface),
i=55
The angle of incidence for second surface (air-glass interface),
r
2
=40
r
1
and r
2
are alternate interior angles,
∠r
1
=∠r
2
=40
So, the angle of refraction at first surface r
1
=40
Since, the emergent ray is parallel to the incident ray, the angle of emergence must be equal to angle of incidence , i.e.,
∠θ=∠i=55
Answer:
the angle of refraction r
1
=40
the angle of emergence θ=55
Explanation:
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