a. Red
_20. By which matter did Isaac Newton allowed light to passed through in his investigation on
dispersion?
a. Wood
b. Leaf
c. Rubber
d. Prism
_21. Which of the following is the ability of light to absorb and scatter it in all directions?
a. Diffraction of light b. Light scattering c. Interference d. Dispersion of light
_22. Which fringes areas waves interfere destructively?
a. Dark fringes b. Semi-Bright fringes c. Bright fringes d. Dark to Light fringes
23. Which of the following does not imply diffraction?
a. The amount of diffraction is dependent on the wavelength of light and the obstacle's size.
b. The diffraction of light is greater when the opening of obstacle is smaller.
c. There is diffraction when light bends around the corner of the window or door.
d. There is diffraction when light separates into different colors.
_24. Which among the colors has highest frequency?
b. Blue
c. Yellow
d. Orange
25. What is the outer color of the primary rainbow?
a. Red
b. Orange
c. Violet
d. Yellow
26. Which will happen when two identical parts of two waves meet?
a. Destructive Interference
b. Rayleigh Scattering
c. Constructive interference
d. Mie Scattering
27. What happens to the direction of waves when propagated as the light is diffracted?
a. It gets changed
c. It remains unchanged
b. It is uniform
d. It is equal
28. Which quality of light would interference acquire when we contrast between maxima and
minima?
a. Satisfactory
b. Good
c. Poor
d. Very Good
29. What can be seen when you create some soap bubbles in your palm and light passes?
a. Rainbow
b. Water vapor
c. Clouds
d. Water droplets
30. Why the sky appears blue in our sight?
a. Because our eyes are more sensitive to blue light frequencies
b. Because our eyes are less sensitive to blue light frequencies
c. Because our eyes are more sensitive to blue light having longer wavelengths
d. Because our eyes are less sensitive to blue light having longer wavelengths