MCQ
A thin transparent sheet is placed in front of a Young's double slit. The fringe-width will:
- AIncrease.
- BDecrease.
- CRemain same.
- DBecome nonuniform.
✓
Answer
- Remain same.
Explanation:
On the introduction of a transparent sheet in front of one of the slits, the fringe pattern will shift slightly but the width will remain the same.
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 photon will have less energy, if its:
An electric heater kept in vacuum is heated continuously by passing electric current. Its temperature
|
(a) Will go on rising with time |
|
(b) Will stop after sometime as it will loose heat to the surroundings by conduction |
|
(c) Will rise for sometime and there after will start falling |
|
(d) Will become constant after sometime because of loss of heat due to radiation |
Cathode rays travelling from east to west enter into region of electric field directed towards north to south in the plane of paper. The deflection of cathode rays is towards
|
(a) East |
(b) South |
(c) West |
(d) North |
A passenger in an aeroplane shall:
A hole diffuses from the p-side to the n-side in a p-n junction. This means that.
An expression for rate of heat generated, if a current of I ampere flows through a resistance of R W, is
|
(a) |
(b) |
(c) |
(d) IR |
When water droplets merge to form a bigger drop:
- Energy is liberated.
- Energy is absorbed.
- Energy is neither liberated nor absobred.
- Energy may either be liberated or absorbed depending on the nature of the liquid.
Polar molecules has:
If the central portion of a convex lens is wrapped in black paper as shown in the figure
|
(a) No image will be formed by the remaining portion of the lens |
|
(b) The full image will be formed but it will be less bright |
|
(c) The central portion of the image will be missing |
|
(d) There will be two images each produced by one of the exposed portions of the lens |
An electric dipole placed in a non-uniform electric field can experience: