In Newton's rings seen through the reflected light:
Correct answer: B. The central spot is dark
- A. The central spot is bright
- B. The central spot is dark
- C. Both of the above
- D. None of these
Explanation
At the point of contact, the reflected rays suffer a phase inversion, causing destructive interference in reflected light; hence, the central spot appears dark for reflected-light Newton's rings.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Optics
Light is studied through reflection, refraction, dispersion, interference, diffraction and polarization, linking ray behavior with its wave nature. Questions may involve mirrors, lenses, optical instruments, refractive index and image formation, while geometrical optics deals with rays and wave optics explains effects such as interference and diffraction.
Practise Optics
665 free Optics MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 11 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Optics questions
In a plane polarized light:
Velocity of light in vacuum is:
Interference and diffraction support the:
In Young's double slit experiment if the distance between the slits and also the distance between the slits and the screen is doubled, the fringe width is:
The appearance of colors in thin soap or oil film results from:
The danger signals are red while eye is more sensitive to yellow because: