1..What happened if the "interference" of "light" occurs? *

A .Good conservation of energy with redistributed of energy

B .Conservation of energy does not occur

C .Conservation of momentum

D .In the region of maximum intensity Energy is destroyed

2..In the diffraction experiment, if the width of a single slit is decreasing, the distance between central fringe to secondary fringes is? *

A .Decrease

B .Increase

C .Decrease Then Increase

D .All mentioned

3 .In a diffraction experiment, what happens if an increased diffraction angle? *

A .The distance between central fringe to first fringe increase

B .The distance between central fringe to first fringe decrease

C .The distance between central fringe to first fringe increase then decrease

D .Nothing happens

4 ..In the diffraction experiment, if the distance between the slit and screen is increasing the distance between the central fringe to the secondary fringes is? *

A .Decrease

B .Increase

C .Decrease Then Increase

D .All mentioned

5 ..What happened If a thin-film of "oil/water" exposed to the sun "visible-light", then irradiated many brilliant colors because? *

A . Interference of sun-light reflected from the upper and lower surfaces of the film.

B .polarization of sun-light reflected from the upper and lower surfaces of the film.

C .Double diffraction

D .Diffraction

6 ..In a single slit experiment ? *

A .The interference pattern is clear.

B .The diffraction pattern is clear.

C .Both the Interference pattern and Diffraction pattern are clear.

D .All mentioned

7 .In Interference and Diffraction experiment, what happens if single and double slit, covered by thick wood? *

A  .The interference pattern become very clear.

B .The diffraction pattern become very clear.

C .The interference and diffraction become very clear.

D .The Interference pattern not formed

8 .The path difference between two "waves" pass from "double slits" is "mλ", only if the waves undergoing "constructive" interference? *

A .True

B .False

9 .In the absorption coefficient experiment what happen if the glass was replaced with a 100% light absorbing material? *

A .T= 100%

B .T= 75%

C .T= 50%

D .T= 0%

10 In the absorption coefficient experiment What happen if the glass was replaced with air? *

A .T= 100%

B  .T= 75%

C  .T= 50%

D .T= 0%

11 .In the absorption coefficient experiment what happen if the thickness of materials increases? *

A .The radiation intensity decreases

B .The radiation intensity increases

C .The radiation intensity decreases then increases

D .Nothing happens

12 .The measurement of the laser beam wavelength carried out by using? *

A .Power supply device

B .Electric meter device

C .Monochromatic device

D .Ruler

13 .Name the three (3) features of light from a laser that make it both more useful and more dangerous than light from sources that are more common. *

A .Coherent, monochromatic, multi directional

B .Coherent, many wavelengths, directional

C .Coherent, non-monochromatic, multi directional

D .Coherence, monochromatic, directional

14 .Mainly, the process of measuring the range using laser beams depends on one of its characteristics, namely: *

A .Coherence

B .Polarization

C .Directionality

D .Monochromatic

15 .If the laser beam pass through air with absorption equal to zero,, then the transmission equal to half of absorption? *

A .True

B .False

16 .The laser beam have very high divergence angles? *

A .True

B .False