Chapter 16: Questions with Calculations

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)?