MHT CET questions
29293 published questions with worked solutions.
- A perfectly black body emits radiation at temperature T_1 K. If it is to radiate 16 times this power, its temperature T_2 will be
- The rate of loss of heat is same as :
- A black body is at a temperature of 500°k. It emits energy at a rate which is proportional to :
- The energy emitted by a black body at 727°C is E. How many times will be the energy emitted if the temperature if the body be...
- A metal ball of surface area 200 square cm, temperature 527°C is surrounded by a vessel at 27°C. If the emissivity of the metal...
- Two spheres P and Q of same colour having radii 8 cm and 2 cm are maintained at temperature 127°C and 527°C respectively. The...
- Two spares of the same material have radii 1 m & 4 m and temperature 4000 K and 2000 K respectively. The ratio of the energy...
- A black body radiates energy at the rate of E W/m^2 at a high temperature T K. When the temperature is reduced to T/2 K, the...
- A metal ball of surface area 200 cm^2 and temperature 527°C is surrounded by a vessel at 27°C. If the emissivity of the metal is...
- The temperature–time graphs obtained in Newton's cooling experiment is
- A sphere, a cube, a cone and a thin disc all made up of the same material and all have the same mass. If they are heated to the...
- A Solid cube and a sphere are made of the same material and both have the same surface area. If both are at the temperature of...
- Newton's law of cooling is used in laboratory for the determination of the specific heat of
- Newton's law of cooling holds good, if the temperature difference between body and surrounding is
- Newton's law of cooling is valid for
- Newton's law of cooling is also applicable to
- In the above question, the body that cool slowest is
- Newton's law of cooling can be obtained from
- Two spheres of radii in the ratio 1 : 2, densities in the ratio 2 : 1 and of Same specific heat are heated to the Same...
- If the temperature of a hot body is raised by 8%, then the heat energy radiated would increase by