MCQ
The angular spread of central maximum, in the diffraction pattern, does not depend on ______.
- AThe distance between the slit and sources
- BWidth of slit
- CWavelength of light
- DFrequency of light
✓
Answer
- The distance between the slit and sources
Explanation:
Angular spread of central maxima $=(\theta)=\frac{\lambda}{\text{b}}$
Where $\lambda$ = wavelength of light
b = width of slit
⇒ Clearly, it does depends on the distance between slit and sources.
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
A very small magnet is placed in the magnetic meridian with its south pole pointing north. The null point is obtained 20cm away from the centre of the magnet. If the earth¢s magnetic field (horizontal component) at this point be 0.3 gauss, the magnetic moment of the magnet is:
In the given figure net magnetic field at O will be
(a)  
|
(b) 
|
(c) |
(d) |
When an alpha particle is emitted from a radioactive source:
In a concave mirror experiment, an object is placed at a distance 
from the focus and the image is formed at a distance 
from the focus. The focal length of the mirror would be
|
(a) |
(b) |
(c) |
(d) |
When we clap our hands, the sound produced is best described by-
→-
$\text{p}=\text{p}_0\sin(\text{kx}-\omega\text{t})$
-
$\text{p}=\text{p}_0\sin\text{kx}\cos\omega\text{t}$
-
$\text{p}=\text{p}_0\cos\text{kx}\sin\omega\text{t}$
-
$\text{p}=\sum\text{p}_{0\text{n}}\sin(\text{k}_\text{n}\text{x}-\omega_\text{n}\text{t}).$
A moving coil galvanometer has N number of turns in a coil of effective area A, it carries a current I. The magnetic field B is radial. The torque acting on the coil is:
What is the equivalent resistance between A and B
|
(a) |
(b) |
(c) |
(d) 2R |
Peltier co-efficient of a thermo couple is 2 nano volts. How much heat is developed at a junction if 2.5 amp current flows for 2 minute
|
(a) 6 ergs |
(b) 6 |
(c) 16 ergs |
(d) 6 |
An electron and a proton are both released from rest 1 meter from a large stationary negative charge, considering only the force from the large stationary negative charge on the proton and electron. Which of the following is true?
Some equipotential surfaces of the magnetic scalar potential are shown in the figure. Magnetic field at a point in the region is
|
(a) |
(b) 2 |
(c) 0.5 |
(d) None of these |
