Question

B. Statements given below are incorrect. Write
1. When a ray of light travels from optically
denser medium to optically rarer medium,
always
low
normally,
the correct statements.
ray of
avelling
optical
ey and
during
ce of
it always bends towards the normal.
2. A ray of light is incident perpendicularly on
a glass slab. The angle of incidence is 90°.
3. The ratio between the velocity of light in a
given optical medium to the velocity of light
in vacuum is called refractive index.
4. When a ray of light travels from an optically
less denser medium to an optically more
denser medium, the angle of incidence is
always less than angle of refraction.
the
alled​

Answer 1

Answer:

When a ray of light travels from optically denser medium to optically rarer medium, it always bends away from the normal.

According to Snell's Law:

n

1

n

2

=

sinr

sini

For optically denser medium, refractive index n

1

is greater than that of the rarer medium n

2

. Thus, the angle of refraction has to be greater than angle of incidence i.e. it bends away from the normal.