Question Answers

Direction of the first secondary maximum in the Fraunhofer diffraction pattern at a single slit is given by (a is the width of the slit) Direction of the first secondary maximum in the Fraunhofer diffraction pattern at a single slit is given by (a is the width of the slit) October 12, 2020 Category: Uncategorised [...]

A beam of light of wavelength 600 nm from a distant source falls on a single slit 1 mm wide and the resulting diffraction pattern is observed on a screen 2 m away. The distance between A beam of light of wavelength 600 nm from a distant source falls on a single slit 1 mm [...]

8. Water is pouring into a cuboidal reservoir at the rate of 60 liters per minute. If the volume of reservoir is 108 m^3, find the number of hours it will take to fill the reservoir. 8. Water is pouring into a cuboidal reservoir at the rate of 60 liters per minute. If the volume [...]

7. If each edge of a cube is doubled, (i) how many times will its surface area increase? (ii) how many times will its volume increase? (i) how many times will its surface area increase? (ii) how many times will its volume increase? 7. If each edge of a cube is doubled October 12, 2020 [...]

Light of wavelength 589.3 nm is incident normally on the slit of width 0.1 mm. What will be the angular width of the central diffraction maximum at a distance of 1 m from the slit? Light of wavelength 589.3 nm is incident normally on the slit of width 0.1 mm. What will be the angular [...]

6. A milk tank is in the form of cylinder whose radius is 1.5 m and length is 7 m. Find the quantity of milk in liters that can be stored in the tank. 6. A milk tank is in the form of cylinder whose radius is 1.5 m and length is 7 m. Find [...]

Red light is generally used to observe diffraction pattern from single slit. If blue light is used instead of red light, then diffraction pattern Red light is generally used to observe diffraction pattern from single slit. If blue light is used instead of red light then diffraction pattern October 12, 2020 Category: Uncategorised (JEE Advanced [...]

5. Find the height of the cylinder whose volume if 1.54 m^3 and diameter of the base is 140 cm. 5. Find the height of the cylinder whose volume if 1.54 m^3 and diameter of the base is 140 cm. October 12, 2020 Category: Chapter 11 - Mensuration , Maths , NCERT Class 8 ,

4. A cuboid is of dimensions 60 cm×54 cm×30 cm. How many small cubes with side 6 cm can be placed in the given cuboid? 4. A cuboid is of dimensions 60 cm×54 cm×30 cm. How many small cubes with side 6 cm can be placed in the given cuboid? October 12, 2020 Category: Chapter [...]

A plane wavefront (lemda = 6 *10^-7 m) falls on a slit 0.4 mm wide. A convex lens of focal length 0.8 m placed behind the slit focusses the light on a screen. What is the linear diameter A plane wavefront (lemda = 6 *10^-7 m) falls on a slit 0.4 mm wide. A convex [...]