For all practical purposes we consider that light travels in _:
Correct answer: B. Straight lines
- A. Curved lines
- B. Straight lines
- C. Sometimes curved and sometimes in straight line
- D. None of these
Explanation
Light waves never travel in curved lines. If they travel in curved lines , then they would not cast shadows of objects placed in their paths. Light waves always travel in straight lines, that is why they cast shadows of objects placed in their paths .
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
Michelson's interferometer is usually used to determine:
In Michelson's interferometer, if movable mirror is displaced through distance equal to wavelength of monochromatic light then the number of bright fringes observed will be:
In Michelson's interferometer if the movable mirror is displaced through a distance of 0.05mm, 200 fringes are observed. The wavelength of light used in that case is:
When light traveling in one medium strikes the boundary of another medium a part of it is sent back in the same medium, this is known as _:
The gradual change of light, by which we receive light at dawn or after sunset, is due to _:
The image of a real object formed in a plain mirror is found to be _: