MCQ
The mean intensity in the interference pattern obtained from two coherent sources of equal intensity $I _0$ will be :
- A$I _0$
- B$2 I _0$
- ✓$4 I _0$
- D$0$
✓
Answer
Correct option: C.
$4 I _0$
(C) - $4 I _0$
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
In nuclear reaction 
A denotes
|
(a) Electron |
(b) Positron |
(c) Proton |
(d) Neutron |
During a negative beta decay:
- An atomic electron is ejected.
- An electron which is already present within the nucleus is ejected.
- A neutron in the nucleus decays emitting an electron.
- A proton in the nucleus decays emitting an electron.
The attenuation in optical fibre is mainly due to
|
(a) Absorption |
(b) Scattering |
|
(c) Neither absorption nor scattering |
(d) Both (a) and (b) |
An element has number of electrons = 2. Then what will be its atomic number?.
Find the wrong statement.
Electric lines of force about a positive point charge are:
Consider the situation shown in figure. The straight wire is fixed but the loop can move under magnetic force. The loop will:
A semiconductor is doped with a donor impurity:
- The hole concentration increases.
- The hole concentration decreases.
- The electron concentration increases.
- The electron concentration decreases.
A wire is placed parallel to the lines of force in a magnetic field and a current flows in the wire. Then:
When a negatively charged conductor is connected to earth