MCQ
The fringe width in an interference pattern is W. The distance between the 6th dark fringe and the 4 th bright fringe on the same side of the central bright fringe is
- ✓$1.5 W$
- B$2 W$
- C$25 W$
- D$10.5 W$.
✓
Answer
Correct option: A.
$1.5 W$
$1.5 W$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
When a 12000 joule of work is done on a flywheel, its frequency of rotation increases from 10 to $20 Hz$. The moment of inertia of flywheel about its axis of rotation is $\left(\pi^2=10\right)$
→In a serics LCR circuit the phase difference between the voltage and the current is 45". Then the power factor will be _________.
A big drop of radius $R$ is formed from 1000 droplets of water. The radius of a droplet will be
→The magnetic susceptibility is given by
A long solenoid has $200$ turns per $cm$ and carriers a current $i$. The magnetic field at its centre is $6.28 \times 10^{-2} Wb / m ^2$. Another long solenoid has $100$ turns per $cm$ and it carries a current $i / 3$. The value of magnetic field at its centre is nearly
→The period of a conical pendulum in terms of its length $(I)$, semivertical angle $(\theta)$ and acceleration due to gravity $(\mathrm{g})$, is
→Two light waves of intensities ' $I_1$ ' and ' $I_2$ ' having same frequency pass through same medium at a time in same direction and interfere. The sum of the minimum and maximum intensities is
→The surface of a liquid (of uniform density p) in a container is open to the atmosphere. The atmospheric pressure is $\rho_0$. The pressure $\rho g h$, at a depth $h$ below the surface of the liquid, is called the
→The de Broglie wavelength of an electron in $4^{\text {th }}$ orbit is ( $r=$ radius of $1^{\text {st }}$ orbit)
→