Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)
A body takes 4 min to cool from 100 degree C TO 70 degree C. To cool from 70 degree C to 40 degree C it will take ( room temperature is 15 degree C )
04
Oct
A body takes 4 min to cool from 100 degree C TO 70 degree C. To cool from 70 degree C to 40 degree C it will take ( room temperature is 15 degree C ) A body takes 4 min to cool from 100 degree C TO 70 degree C. To cool from 70 [...]
Equal masses of two liquids are filled in two similar calorimeters. The rate of cooling will
04
Oct
Equal masses of two liquids are filled in two similar calorimeters. The rate of cooling will Equal masses of two liquids are filled in two similar calorimeters. The rate of cooling will October 4, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
Consider two hot bodies B1 and B2 which have temperature 100∘C and 80∘C respectively at t = 0. The temperature of surroundings is 40∘ C. The ratio of the respective rates of cooling R1 and R2 of these two bodies at = 0 will be
04
Oct
Consider two hot bodies B1 and B2 which have temperature 100∘C and 80∘C respectively at t = 0. The temperature of surroundings is 40∘ C. The ratio of the respective rates of cooling R1 and R2 of these two bodies at = 0 will be A black body radiates energy at the rate of E [...]
The rectangular surface of area 8 cm × 4 cm of a black body at a temperature of 127 0 C emits energy at the rate of E per second. If the length and breadth of the surface are each reduced to half of the initial value and the temperature is raised 327 o C, the rate of emission of energy will become
04
Oct
The rectangular surface of area 8 cm × 4 cm of a black body at a temperature of 127 0 C emits energy at the rate of E per second. If the length and breadth of the surface are each reduced to half of the initial value and the temperature is raised 327 o C, [...]
A black body radiates energy at the rate of E W/ m^2 at a high temperature T K. When the temperture is reduced to T/2 K, the radiant energy will be………
04
Oct
A black body radiates energy at the rate of E W/ m^2 at a high temperature T K. When the temperture is reduced to T/2 K, the radiant energy will be……… A black body radiates energy at the rate of E W/ m^2 at a high temperature T K. When the temperture is reduced to [...]
The intensity of radiation emitted by the sun has its maximum value at a wavelenght of `510 nm` and that emitted by the north star has the maximum value at `350 nm` If these stars behave like balackbodies the nthe ratio of the surface temperature of the sun and the north star is .
04
Oct
The intensity of radiation emitted by the sun has its maximum value at a wavelenght of `510 nm` and that emitted by the north star has the maximum value at `350 nm` If these stars behave like balackbodies the nthe ratio of the surface temperature of the sun and the north star is . At [...]
A Black body emits radiations of maximum intensity at a wavelength of 5000 A, when the temperature of the body is 1227 degree C. If the body is increased by 1000 degree C, the maximum intensity of emitted radiation would be observed at…………..
04
Oct
A Black body emits radiations of maximum intensity at a wavelength of 5000 A, when the temperature of the body is 1227 degree C. If the body is increased by 1000 degree C, the maximum intensity of emitted radiation would be observed at………….. A Black body emits radiations of maximum intensity at a wavelength of [...]
If wavelengths of maximum intensity of radiations emitted by the sun and the moon are 0.5 x 10^-6 and 10^-4 m respectively, the ratio of their temperatures is………..
04
Oct
If wavelengths of maximum intensity of radiations emitted by the sun and the moon are 0.5 x 10^-6 and 10^-4 m respectively, the ratio of their temperatures is……….. If wavelengths of maximum intensity of radiations emitted by the sun and the moon are 0.5 x 10^-6 and 10^-4 m respectively the ratio of their temperatures [...]
A good absorber is (a) good reflector (b) poor reflector
04
Oct
A good absorber is (a) good reflector (b) poor reflector A good absorber is (a) good reflector (b) poor reflector October 4, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
At what rate the body will absorb the radiant energy?
04
Oct
At what rate the body will absorb the radiant energy? At what rate the body will absorb the radiant energy? October 4, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,