Explore topic-wise MCQs in Physics.

This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.

1.

When is the wave interference strong?

A. When the paths taken by all of the interfering waves are greater than the coherence length
B. When the paths taken by all of the interfering waves are lesser than the coherence length
C. When the paths taken by all of the interfering waves are equal than the coherence length
D. When the paths taken by all of the interfering waves are independent of the coherence length
Answer» C. When the paths taken by all of the interfering waves are equal than the coherence length
Discussion
2.

Which of the following is the formula for calculating coherence time?a) Τc = \(\frac {\lambda^3}{(c\Delta \lambda)}\) b) Τc = \(\frac {\lambda}{(c\Delta \lambda)}\) c) Τc = \(\frac {\lambda^2}{(c\Delta \lambda)}\) d) Τc = \(\frac {\lambda^2}{(c\Delta \lambd

A. Τc = \(\frac {\lambda^3}{(c\Delta \lambda)}\)
B. Τc = \(\frac {\lambda}{(c\Delta \lambda)}\)
C. Τc = \(\frac {\lambda^2}{(c\Delta \lambda)}\)
D. Τc = \(\frac {\lambda^2}{(c\Delta \lambda)}\)
Answer» E.
Discussion
3.

Identify the factor is not the same for coherent waves.

A. Frequency
B. Phase difference constant
C. Amplitude
D. Wavelength in phase with each other
Answer» D. Wavelength in phase with each other
Discussion
4.

Scattering of waves can be coherent and incoherent.

A. True
B. False
Answer» B. False
Discussion
5.

Which among the following is an example of coherent sources?

A. Fluorescent tubes
B. LED light
C. LASER
D. Tungsten filament lamps
Answer» D. Tungsten filament lamps
Discussion
6.

Which of the following is a form of light whose photons share the same frequency and whose wavelengths are in phase with one another?

A. Coherent sources
B. Incoherent sources
C. Electromagnetic waves
D. Sunlight
Answer» B. Incoherent sources
Discussion