# Physics 1st Year Chapter 9 MCQs Online

Physics 1st Year Chapter 9 MCQs are up-to-date and are beneficial for both entry tests and board examinations. Students must prepare these again and again to have the best possible result.

## Physics 1st Year Chapter 9 MCQs

FSc 1st Year Physics Chapter 9 MCQs Notes are a helping material for all kinds of papers.

## Physics 1st Year Chapter 9 Physical Optics

The locus of all points in a medium having the same phase of vibration is called:
The distance between two consecutive wave fronts is called:
Which one of the following is nearly monochromatic light?
Two sources of light are coherent if they emit rays of:
Sodium chloride in a flame gives out pure:
When crest of one wave falls over the trough of the other wave, this phenomenon is known as:
The condition for constructive interference of two coherent beams is that the path difference should be:
The condition for destructive interference of two coherent beams is that the path difference should be:
In Young’s double slit experiment, the distance between two adjacent bright fringes, ∆𝑦 is:
In Young double slit experiment, if white light is used:
The center of Newton’s rings is ____ due to destructive interference:
When the Newton’s rings are observed with reflected light, the central spot is:
When the Newton’s rings are observed with transmitted light, the central spot is:
The appearance of Color in thin films is due to:
Soap film exhibit brilliant colors in sun light due to:
The bending of a beam of light when it passes from one medium to another is known as:
The effective path difference between two reflected beams, in x-ray diffraction by crystal is:
The equation of Michelson’s interferometer is:
𝑑 sin 𝜃 = 𝑚𝜆 is called:
2𝑑 sin 𝜃 = 𝑚𝜆 is called:
One angstrom is equal to:
A light ray traveling form denser to rarer medium suffers a phase change of:
A light ray traveling form rarer to denser medium suffers a phase change of:
Physics 1st Year Chapter 9 Physical Optics
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