
1. How long does it take light to travel from our Moon
to the Earth?
2. Light and television or radio waves are all electromagnetic
waves and travel with the same speed. Television often uses communications
satellites that orbit about 40,000 km above Earth's surface. How
long does it take a TV signal to travel from a transmitter to
the communications satellite and back down to a receiver?
3. Consider light that passes from air, with n = 1.00,
into water, with n = 1.33. If the angle of incidence in air is
30, what is the angle of refraction in water?
4. Consider light that passes from air, with n = 1.00,
into water, with n = 1.33. If the angle of incidence in air is
60, what is the angle of refraction in water?
5. Consider light that passes from water, with n = 1.33,
into glass, with n = 1.55. If the angle of incidence in air is
30, what is the angle of refraction in glass?
6. Consider light that passes from water, with n = 1.33,
into glass, with n = 1.55. If the angle of incidence in air is
60, what is the angle of refraction in glass?
7. Consider light that passes from water, with n = 1.33,
into air, with n = 1.00. If the angle of incidence in water is
15, what is the angle of refraction in air?
8. Consider light that passes from water, with n = 1.33,
into air, with n = 1.00. If the angle of incidence in water is
30, what is the angle of refraction in air?
9. Consider light that passes from glass, with n = 1.55,
into air, with n = 1.00. If the angle of incidence in glass is
15, what is the angle of refraction in air?
10. Consider light that passes from glass, with n = 1.55,
into water, with n = 1.33. If the angle of incidence in glass
is 30, what is the angle of refraction in water?
11. What is the critical angle for glass with n = 1.55
and air ( n = 1.00)?
12. What is the critical angle for water with n = 1.33
and air ( n = 1.00)?
13. What is the critical angle for diamond with n = 2.40
and air ( n = 1.00)?
