Diffraction is prominent when the wavelength of light is:
Correct answer: C. Large as compared with the size of the obstacle
- A. Five time small as compared with the size of the obstacle
- B. Large as compared with the mass of the obstacle
- C. Large as compared with the size of the obstacle
- D. One half as compared with the size of the obstacle
Explanation
The bending of a beam of light around the corners of the obstacles is called diffraction. It occurs only when the wavelength is comparable to the size of the aperture. As the wavelength increases, the diffraction effect will also increase.Thus for greater diffraction, it is important that the size of the obstacle is directly proportional to the wavelength of the source. Suppose a is diffraction and λ is the wavelength a∝λ Hence for diffraction, the size of the obstacle should be in the order of a wavelength due to the wave nature of light.
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
As a result of interference, energy --------.
Which of the following phenomena proves that light waves are transverse waves?
What is the main feature required by the optical fiber for the propagation of light in an optical fiber?
Which of the following properties of light does not change with the nature of the medium?
A scanning electron microscope produces:
Polarization of light shows that it is: