MCQ
In a single slit diffraction experiment first minimum for red light (660 nm) coincides with first maximum of some other wavelength l'. The value of l' is
- ✓4400 Å
- B6600 Å
- C2000 Å
- D3500 Å
✓
Answer
Correct option: A.
4400 Å
4400 Å
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
For a cylinder of radius $R$ current density $J =J_0 \frac{r}{R} $, where $J_0$ is a constant and $r$ is distance from axis. Calculate total current
→In the following diagram the work done in moving a point charge from point $P$ to point $A, B$ and $C$ is respectively as $W_A,\, W_B$ and $W_C$, then (there is no charge nearby)
→In figure, $a$ lamp $P$ is in series with an iron-core inductor $L$. When the switch $S$ is closed, the brightness of the lamp rises relatively slowly to its full brightness than it would do without the inductor. This is due to
→When light travels from one medium to the other of which the refractive index is different, then which of the following will change
An electron jumps from the $4^{\text {th }}$ orbit to the $2^{\text {nd }}$ orbit of hydrogen atom. Given the Rydberg's constant $R =10^5 cm^{-1}$ The frequency in Hz of the emitted radiation will be
→A metallic shell has a point charge ‘q’ kept inside its cavity. Which one of the following diagrams correctly represents the electric lines of forces
For the production of characteristic $K_\gamma$ X-ray, the electron transition is
→Coefficient of mutual inductance between two coils is 2.5 H . If current is changing in one coil at the rate of 1 $A / s$, then magnitude of induced emf in the secondary coil : $\quad \begin{array}{ll} & 0\end{array}$
→An object is at a distance of 0.5 m in front of a plane mirror. Distance between the object and image is
The horizontal component of the earth’s magnetic field at a place is $3 × 10^{-4} T$ and the dip is . A metal rod of length $0.25\, m$ placed in the north-south position and is moved at a constant speed of $10\, cm/s$ towards the east. The emf induced in the rod will be......$ \mu V$
→