Question Answers

9. A 5 m 60 cm high vertical pole casts a shadow 3 m 20 cm long. Find at the same time (i) the length of the shadow cast by another pole 10 m 50 cm high (ii) the height of a pole which casts a shadow 5 m long. 7. Simplify. (ii) 3^5 x [...]

8. Rashmi has a road map with a scale of 1 cm representing 18 km. She drives on a road for 72 km. What would be her distance covered in the map? 8. Rashmi has a road map with a scale of 1 cm representing 18 km. She drives on a road for 72 km. [...]

7. Suppose 2 kg of sugar contains 9×10^6 crystals. How many sugar crystals are there in (i) 5 kg of sugar? (ii) 1.2 kg of sugar? 7. Suppose 2 kg of sugar contains 9×10^6 crystals. How many sugar crystals are there in (i) 5 kg of sugar? (ii) 1.2 kg of sugar? October 12, 2020 [...]

1. What will be the unit digit of the squares of the following numbers? i. 81 ii. 272 iii. 799 iv. 3853 v. 1234 vi. 26387 vii. 52698 viii. 99880 ix. 12796 x. 55555 1. What will be the unit digit of the squares of the following numbers? i. 81 ii. 272 iii. 799 iv. [...]

6. In a model of a ship, the mast is 9 cm high, while the mast of the actual ship is 12 m high. If the length if the ship is 28 m, how long is the model ship? 6. In a model of a ship how long is the model ship? the mast is [...]

The ratio of the intensity at the centre of a bright fringe to the intensity at a point one-quarter of the distance between two fringe from the centre is The ratio of the intensity at the centre of a bright fringe to the intensity at a point one-quarter of the distance between two fringe from [...]

5. A photograph of a bacteria enlarged 50,000 times attains a length of 5 cm as shown in the diagram. What is the actual length of the bacteria? If the photograph is enlarged 20,000 times only, what would be its enlarged length? 000 times attains a length of 5 cm as shown in the diagram. [...]

The ratio of intensities of consecutive maxima in the diffraction pattern due to a single slit is The ratio of intensities of consecutive maxima in the diffraction pattern due to a single slit is October 12, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

4. A machine in a soft drink factory fills 840 bottles in six hours. How many bottles will it fill in five hours? 4. A machine in a soft drink factory fills 840 bottles in six hours. How many bottles will it fill in five hours? October 12, 2020 Category: Chapter 13 - Direct and [...]

In a single slit diffraction experiment first minimum for red light (660 nm) coincides with first maximum of some other wavelength lemda. The value of lemda’ is In a single slit diffraction experiment first minimum for red light (660 nm) coincides with first maximum of some other wavelength lemda. The value of lemda' is October [...]