Question Answers
Sahay Sir > Question Answers
Two holes of unequal diameters d1 and d2 (d1 > d2) are cut in a metal sheet. If the sheet is heated (1) both d1 and d2 will decrease (2) both d1 and d2 will increase
23
Oct
Two holes of unequal diameters d1 and d2 (d1 > d2) are cut in a metal sheet. If the sheet is heated (1) both d1 and d2 will decrease (2) both d1 and d2 will increase Two holes of unequal diameters d1 and d2 (d1 > d2) are cut in a metal sheet. If the [...]
A cylindrical metal rod of length L0 is shaped into a ring with a small gap as shown. On heating the system
23
Oct
A cylindrical metal rod of length L0 is shaped into a ring with a small gap as shown. On heating the system A cylindrical metal rod of length L0 is shaped into a ring with a small gap as shown. On heating the system October 23, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma [...]
The angle of a prism is 6^∘ and its refractive index for green light is 1.5. If a green ray passes through it, the deviation will be :
23
Oct
The angle of a prism is 6^∘ and its refractive index for green light is 1.5. If a green ray passes through it, the deviation will be : The angle of a prism is 6^∘ and its refractive index for green light is 1.5. If a green ray passes through it the deviation will be [...]
The ratio of the densities of the two bodies is 3 : 4 and the ratio of specific heats is 4 : 3. Find the ratio of their thermal capacities for unit volume ?
23
Oct
The ratio of the densities of the two bodies is 3 : 4 and the ratio of specific heats is 4 : 3. Find the ratio of their thermal capacities for unit volume ? The ratio of the densities of the two bodies is 3 : 4 and the ratio of specific heats is 4 [...]
1 g steam at 100 C is passed in an insulated vessel having 1 g ice at 0 C. Find the equilibrium temperature of the mixture. Neglect heat capacity of the vessel.
23
Oct
1 g steam at 100 C is passed in an insulated vessel having 1 g ice at 0 C. Find the equilibrium temperature of the mixture. Neglect heat capacity of the vessel. 1 g steam at 100 C is passed in an insulated vessel having 1 g ice at 0 C. Find the equilibrium temperature [...]
A certain amount of ice is supplied heat at a constant rate for 7 min. For the first 1 min, the temperature rises uniformly with time ; then it remains constant for the next 4 min and again rises
23
Oct
A certain amount of ice is supplied heat at a constant rate for 7 min. For the first 1 min, the temperature rises uniformly with time ; then it remains constant for the next 4 min and again rises A certain amount of ice is supplied heat at a constant rate for 7 min. For [...]
Two point masses of 0.3 kg and 0.7 kg are fixed at the ends of a rod of length 1.4 m and of negligible mass. The rod is set rotating about an axis perpendicular to its length with a uniform angular speed. The point on the rod through which the axis should pass in order that the work required for rotation of the rod is minimum, is located at a distance of
23
Oct
Two point masses of 0.3 kg and 0.7 kg are fixed at the ends of a rod of length 1.4 m and of negligible mass. The rod is set rotating about an axis perpendicular to its length with a uniform angular speed. The point on the rod through which the axis should pass in order [...]
A flywheel is in the form of a uniform circular disc of radius 1m and mass 2kg. The work which must be done on it to increase its frequency of rotation from 5 to 10 rev/s is approximately
23
Oct
A flywheel is in the form of a uniform circular disc of radius 1m and mass 2kg. The work which must be done on it to increase its frequency of rotation from 5 to 10 rev/s is approximately A flywheel is in the form of a uniform circular disc of radius 1m and mass 2kg. [...]
An automobile engine develops 100 kilo−watt, when rotating at a speed of 1800 rev/min. What torque does it deliver ?
23
Oct
An automobile engine develops 100 kilo−watt, when rotating at a speed of 1800 rev/min. What torque does it deliver ? An automobile engine develops 100 kilo−watt when rotating at a speed of 1800 rev/min. What torque does it deliver ? October 23, 2020 Category: Cengage NEET by C.P Singh , Chapter 11 - Rotational Motion [...]
A uniform rod is kept vertically on a horizontally smooth surface at a point O. IF it is rotated slightly and released, it falls down on the horizontal surface. The lower end will remain
23
Oct
A uniform rod is kept vertically on a horizontally smooth surface at a point O. IF it is rotated slightly and released, it falls down on the horizontal surface. The lower end will remain A uniform rod is kept vertically on a horizontally smooth surface at a point O. IF it is rotated slightly and [...]