- 1(current)
Q. No.1. \(8:5\)
2. \(5:8\)
3. \(1:4\)
4. \(9:1\)
In Young's double-slit experiment, the intensity of light at a point on the screen where the path difference is \(\lambda\) is \(K\), (\(\lambda\) being the wavelength of light used). The intensity at a point where the path difference is \(\frac{\lambda}{4}\) will be:
1. \(K\)
2. \(\frac{K}{4}\)
3. \(\frac{K}{2}\)
4. zero
Two coherent sources of light interfere and produce fringe patterns on a screen. For the central maximum, the phase difference between the two waves will be:
| 1. | zero | 2. | \(\pi\) |
| 3. | \(\dfrac{3\pi}{2}\) | 4. | \(\dfrac{\pi}{2}\) |
1. \(450\) nm
2. \(550\) nm
3. \(650\) nm
4. \(750\) nm
In Young’s double-slit experiment using monochromatic light of wavelength \(\lambda,\) the intensity of light at a point on the screen where path difference \(\lambda\) is \(K\) units. What is the intensity of the light at a point where path difference is \(\lambda/3\)?
1. \(\dfrac K3\)
2. \(\dfrac K4\)
3. \(\dfrac K2\)
4. \(K\)
| 1. | \(\dfrac{\sqrt{n}}{n+1}\) | 2. | \(\dfrac{2\sqrt{n}}{n+1}\) |
| 3. | \(\dfrac{\sqrt{n}}{(n+1)^2}\) | 4. | \(\dfrac{2\sqrt{n}}{(n+1)^2}\) |
| 1. | is conserved, gets redistributed |
| 2. | is equal at every point |
| 3. | is not conserved |
| 4. | is created in place of bright fringes |
When a drop of oil is spread on a water surface, it displays beautiful colours in daylight because of:
| 1. | dispersion of light | 2. | reflection of light |
| 3. | polarization of light | 4. | interference of light |
- 1(current)
Q. No.
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