3.2. Light
A subsection of Physics, 5054, through 3. Waves
Listing 10 of 242 questions
10 A laser produces red light of frequency 4.7 × 1014 Hz. The speed of light in glass is 2.0 × 108 m / s. Calculate the wavelength in glass of light from this laser. wavelength = Describe an experiment to verify the law of reflection for light. You may include a diagram in your answer. shows a ray of light travelling in an optical fibre. The ray strikes the side of the fibre at P. P 7° The angle between the ray and the side of the fibre is 7°. Determine the angle of incidence of the ray at P. angle = State and explain what happens to the ray at P. A room is illuminated by wall lamps. shows a mirror on the wall behind one of the lamps. 0.19 m mirror wall lamp wall point X (not to scale) X is a point on the filament of the lamp. It is 0.19 m in front of the mirror. On , draw rays from X and locate the image of X. Label the image I. State the distance between I and the mirror. distance = Suggest one advantage of placing a mirror behind the lamp in the room.
5054_w12_qp_22
THEORY
2012
Paper 2, Variant 2
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Questions Discovered
242