Choose the correct answer: 1-Speed of the wave depends on? A-frequency B-wavelength C-A and B 2- Which of these electoma

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Choose the correct answer:
1-Speed of the wave depends on?
A-frequency
B-wavelength
C-A and B
2- Which of these electomagntic waves has the lower frequancy?
A-Gamma rays
B- X Rays
C-light waves
D-ultraviolet waves
E-radio waves
3-compred to its average speed in air, the avarege speed of a beam of light in water is?
A-less
B-more
C- the same
4-total internal reflection occurs only when lights attempts to move
A-from a medium of lower index of refraction to a medium of higher index of refraction
B-from a medium of higher index of refraction to a medium of lower index of refraction
C-none
5-light has maximum speed in vacuum
A-true
B-false
6-specular reflection is
A-reflection from a rough surface
B- reflection from a smooth surface
C-reflection from any surface
7- the basis of fiber optics is
A-Refraction
B-total internal reflection
C-reflection
D-none of these