Compared to the speed of light in a material medium, the speed of light in a vacuum is

1.   ?    less
2.   ?    the same
3.   ?    greater

When an angle of incidence t becomes the critical angle, the angle of refraction will be

1.   ?    90 Degrees
2.   ?    0 Degrees
3.   ?    greater than t, but less than 90 degrees
4.   ?    t

What occurs when light passes from water into flint glass?

1.   ?    Its speed increases, its wavelength becomes larger, and its frequency remains the same.
2.   ?    Its speed decreases, its wavelength becomes smaller, and its frequency increases.
3.   ?    Its speed decreases, its wavelength becomes smaller, and its frequency remains the same.
4.   ?    Its speed increases, its wavelength becomes larger, and its frequency decreases.

Light travels from medium A where its speed is 2.5 x 10^8 meters per second into medium B where its speed is 2.0 x 10^8 meters per second. Compared to the absolute index of refraction of medium A, the absolute index of refraction of medium B is

1.   ?    greater
2.   ?    the same
3.   ?    less

As t approaches the critical angle, the angle of refraction approaches

1.   ?    41 Degrees
2.   ?    0 Degrees
3.   ?    180 Degrees
4.   ?    90 Degrees

Which phenomenon can be observed for transverse waves only?

1.   ?    reflection
2.   ?    polarization
3.   ?    refraction
4.   ?    diffraction

The spreading of a wave into a region behind an obstruction is called

1.   ?    dispersion
2.   ?    refraction
3.   ?    diffraction
4.   ?    reflection

In order to form the interference pattern, the light passing through the slits must be

Compared to visible light, ultraviolet radiation is more harmful to human skin and eyes because ultraviolet radiation has a