Download App

Wave Optics — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsWave Optics1 Mark
MCQ
For the sustained interference of light, the necessary condition is that the two sources should
  • ✓
    Have constant phase difference
  • B
    Be narrow
  • C
    Be close to each other
  • D
    Of same amplitude
✓

Answer

Correct option: A.
Have constant phase difference
The essential condition for sustained interference is constancy of phase difference.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "MCQ" from Wave Optics→Wave Optics — all question types→JEE physics STD 12 Science question papers→CBSE Board STD 12 Science question papers→CBSE Board question paper generator→

Similar questions

A $U$ tube of uniform bore of cross-sectional area $A$ has been set up vertically with open ends facing up. Now $m$ gm of a liquid of density $d$ is poured into it. The column of liquid in this tube will oscillate with a period $T$ such that
→
The alloys constantan and manganin are used to make standard resistance due to they have
→
$\vec{A}=2 \hat{i}+\hat{j}, B=3 \hat{j}-\hat{k}$ and $\vec{C}=6 \hat{i}-2 \hat{k}$ Value of $\vec{A}-2 \vec{B}+3 \vec{C}$ would be
→
The thermal capacity of a body is $80 \mathrm{cal}$, then its water equivalent is
→
Which of the following statements concerning the depletion zone of an unbiased $P N$ junction is (are) true
→
Work done by 0.1 mole of a gas at $27^{\circ} \mathrm{C}$ to double its volume at constant pressure is $(R=2 \mathrm{cal} \mathrm{mol} \mathrm{C})$
→
A satellite moves around the earth in a circular orbit of radius $r$ with speed $v$. If the mass of the satellite is $\mathcal{M}$, its total energy is
→
Which of the following transition will have highest emission wavelength
→
No bias is applied to a $P-N$ junction, then the current
→
The current in a triode at anode potential $100\ V$ and grid potential $1.2 \ V$ is $7.5\ mA$. If grid potential is changed to $-2.2\ V$, the current becomes $5.5\ mA$. the value of trans conductance $(g)$ will be
→