Question

1) Light travels from
one medium
incidence 45°
to
another
medium making
angle
of refraction 30, the ratio of
refractive indices
half to media, is
A 1:√2
B) √2:1
c) 1:2
D)2:1​

Answer 1

Answer:

What will be the velocity after 7 sec from the start? ... Object starting from rest travels 20 m in first 2 sec and 160 m in next 4 sec. ... After 4sec, it covers a distance of 160m