A black body of mass 32g, specific heat ...

A black body of mass 32g, specific heat = `0.1 cal^@c` and area `8 cm^2` at a temperature of `300^C` is kept in an enclosure maintained at `0^C`. If the body cools at the rate of `0.35 ^@C//s`, calculate Stefan’s constant. J = 4.18 joule/cal.

Topper's Solved these Questions

Kinetic Theory of Gases and Radiation
CHETANA PUBLICATION|Exercise Exercise|110 Videos
Electrostatics
CHETANA PUBLICATION|Exercise Exercise|73 Videos
Magnetic Fields due to Electric Current
CHETANA PUBLICATION|Exercise Exercise|96 Videos

Similar Questions

Explore conceptually related problems

Find the surface area of black body maintained at 127^@C radiating energy at the rate of 1459.2 J//sec .

A body of surface area 10 cm^2 and temperature 727^@C emits 300 J of energy per minutes.Find the emissivity.

A black body at a temperature of 227 ^@C radiates heat at a rate of 5 cal//cm^2s . At a temperature of 727 ^@C , the rate of heat radiated per unit area will be

A black body at 227^(@)C radiates heat at the rate of 7 cal cm^(-2) s^(-1) . At a temperature of 727^(@)C , the rate of heat radiated in the same unit will be

A spherical black body of 5 cm radius is maintained at a temperature of 327^@C . Then the power radiated will be ( sigma = 5.7 xx 10^(-8) SI unit )

What is the temperature at which a black body radiates heat at the rate of one kilowatt per unit area ? (Stefan 's constant sigma = 5.7 xx 10^(-8) S.Iunits)

A black body radiates 3 J/cm^2 s when its temperature is 127^@C .How much heat will be radiated /cm^2 s when its temperature is 527^@C ?

Rates of emission of heat by perfectly black body maintained at temperatures 27° C and 927° C are in ratio

Heat absorbed when 1 g of ice melts at 0^@C to form 1 g of water at the same temperature is ______cal

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 0.4, then the rate of loss of heat from the ball is (sigma = 5.67 xx10^(-8)J//m^(2)-s-k^(4))

CHETANA PUBLICATION-Kinetic Theory of Gases and Radiation-Exercise

Assuming that the sun radiates as a black body, calculate the energy r...
Text Solution
|
The temperature of the filaments of a 100W electric lamp is 2727^@C. T...
Text Solution
|
A black body of mass 32g, specific heat = 0.1 cal^@c and area 8 cm^2 a...
Text Solution
|
If the surface temperature of the sun is assumed to be 6150 K, find th...
Text Solution
|
The coefficients of reflection and transmission of the surface of a th...
Text Solution
|
A metal cube of each side 2 cm long emits 0.16 kcal of heat in 100s. C...
Text Solution
|
Energy is emitted from a hole in an electric furnace at the rate of 20...
Text Solution
|
A copper sphere has a surface area of 3.142 xx 10^-2m^2 and its emissi...
Text Solution
|
A metal cube has each side 2.5 cm long and radiates 0.36 kcal//min. Wh...
Text Solution
|
If lambdam for solar radiation is 4753A^@, estimate the surface temper...
Text Solution
|
Analysis of the sun's spectrum shows that the wave length of maximum i...
Text Solution
|
The coefficient of absorption and coefficient of reflection of a thin ...
Text Solution
|
Heat is incident at the rate of 10 W on an opaque body having an emiss...
Text Solution
|
A 100 watt filament loses all its power by radiation when it is heated...
Text Solution
|
In an ideal gas, the molecules possess
Text Solution
|
The mean free path X of molecules is given by where n is the number of...
Text Solution
|
If pressure of an ideal gas is decreased by 10% isothermally, then its...
Text Solution
|
If a = 0.72, r = 0.24, then the value of t is.......
Text Solution
|
Theratioof emissive powerof perfectly blackbody at 1327 ^@C and 527 ^@...
Text Solution
|
The average distance covered by a moleculebetween two successive colli...
Text Solution
|