Shown here are the results of Young's experiment demonstrating the interference of light. What does the observation of an interference pattern show about the nature of light? (See page 385-386 in your textbook for more on this experiment.)
a. It shows that light consists of particles.
b. It shows that different colors of light have different refractive indices.
c. It shows that all colors of light have the same refractive index.
d. It shows that light consists of waves.
e. It shows that light can be separated into different colors by a prism.
d
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________'s theories were based on the very accurate observations made by ________
A) Kepler; Tycho Brahe B) Galileo; Kepler C) Kepler; Galileo D) Tycho Brahe; Kepler
A man standing on a bridge throws a stone horizontally with a speed of 20 m/s. The stone hits the water below 2.5 s later. The bridge is
A. 60.1 m high. B. 30.6 m high. C. 44.1 m high. D. 20.3 m high.
Moving electric charges are surrounded by
A. electric fields B. magnetic fields C. both of these answers D. neither of these answers
An electron and positron, each having kinetic energy 10 MeV, annihilate and produce two photons. What wavelength is each photon?
A. 0.124 pm B. 0.118 pm C. 0.248 pm D. 0.062 pm E. need more information