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Monochromatic light of wavelength 632.8 nm is produced by a helium-neon laser. The power emitted is 9.42 mW. Monochromatic light of wavelength 632.8 nm is produced by a helium-neon laser. The power emitted is 9.42 mW. October 12, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

The intensity of direct sunlight before it passes through the earth’s atmosphere is 1.4 kWm^-2. If it is completely absorbed, find the corresponding radiation pressure. find the corresponding radiation pressure. The intensity of direct sunlight before it passes through the earth's atmosphere is 1.4 kWm^-2. If it is completely absorbed October 12, 2020 Category: Uncategorised [...]

Unpolarized light of intensity I passes through an ideal polarizer A. Another identical polarizer B is placed behind A. The intensity of light beyond B is found to be 1/2. Now another identical Unpolarized light of intensity I passes through an ideal polarizer A. Another identical polarizer B is placed behind A. The intensity of [...]

The angular width of the central maximum in a single slit diffraction pattern is 60. The width of the slit is 1 mu m. The slit is illuminated by monochromatic plane waves. If another The angular width of the central maximum in a single slit diffraction pattern is 60. The width of the slit is [...]

The box of pin hole camera, of length L, has a hole of radius a. It is assumed that when the hole is illuminated by a parallel beam of light of wavelength lemda the spread of the spot has a hole of radius a. It is assumed that when the hole is illuminated by a [...]

11. A school has 8 periods a day each of 45 minutes duration. How long would each period be, if the school has 9 periods a day, assuming the number of school hours to be the same? 11. A school has 8 periods a day each of 45 minutes duration. How long would each period [...]

10. Two persons could fit new windows in a house in 3 days. (i) One of the persons fell ill before the work started. How long would the job take now? (ii) How many persons would be needed to fit the windows in one day? 7. Suppose 2 kg of sugar contains 9×10^6 crystals. How [...]

9. A car takes 2 hours to reach a destination by travelling at the speed of 60 km/hr. How long will it take when the car travels at the speed of 80 km/hr? 9. A car takes 2 hours to reach a destination by travelling at the speed of 60 km/hr. How long will it [...]

8. A factory requires 42 machines to produce a given number of articles in 63 days. How many machines would be required to produce the same number of articles in 54 days? 8. A factory requires 42 machines to produce a given number of articles in 63 days. How many machines would be required to [...]

7. A batch of bottles was packed in 25 boxes with 12 bottles in each box. If the same batch is packed using 20 bottles in each box, how many boxes would be filled? 7. A batch of bottles was packed in 25 boxes with 12 bottles in each box. If the same batch is [...]