Home
Class 11
PHYSICS
A room has s window fitted with a single...

A room has s window fitted with a single `0.1mxx2.0m` glass of thickness 2mm. (a) Calculate the rate of heat flow through the clossed window when the temperature inside the room is 32^(@)C` and that outside is `40^(@)C` . (b) The glass is now replaced by two glasspance, each having a thickness of 1mm and separated by a distance of 1mm. Calculalte the rate of heat flow under the same condition of temperature. Thermal conductivity of window glass `=1.0Js^(-1)m^(-1)`^(@)C^(-1)` and that of air `=0.025Js^(-1)m^(-1)`^(@)C^(-1)` .

Promotional Banner

Similar Questions

Explore conceptually related problems

A room has s window fitted with a single 1.0mxx2.0m glass of thickness 2mm. (a) Calculate the rate of heat flow through the closed window when the temperature inside the room is 32^(@)C and that outside is 40^(@)C . (b) The glass is now replaced by two glasspanes, each having a thickness of 1mm and separated by a distance of 1mm. Calculate the rate of heat flow under the same condition of temperature. Thermal conductivity of window glass =1.0Js^(-1)m^(-1)C^(-1) and that of air =0.025Js^(-1)m^(-1)C^(-1) .

Calculate the rate of loss heat through a glass window of area 1000sq.cm. and thickness 4mm when the temperature inside is 37°C and outside is 5°C ( K for glass =0.0022)

Calculate the rate of loss of heat through a glass window of area 1000 cm2 and thickness of 4 mm, when temperature inside is 27^@ C and outside is -5^@ C . Coefficient of thermal conductivity of glass is 0.022 cal/ s cm^@ C.

Calculate the rate of loss of heat through a glass window of area 1000 cm^(2) and thickness 0.4 cm when temperature inside is 37^(@)C and outside is -5^@)C . Coefficient of thermal conductivity of glass is 2.2 xx 10^(-3) cal s^(-1) cm^(-1) K^(-1) .

The difference in temperature between two sides of a glass plate 0.3 mm thick is 25^@C . If the area of one side surface is 10 m^2 , calculate the heat conducted per second through the plate. The thermal conductivity of glass is 0.84 J//s m K.

For a glass window of area 1500 cm^2 and thickness 0.5 cm, determine the rate of loss of heat if the temperature inside the window is 35^@C and outside is -2^@C . Take, coefficient of thermal conductivity of glass = 2.2 xx 10^(-3) cal s^(-1) cm^(-1) K^(-1)

The area of a glass window is 1.2 m^(2) . The thickness of the glass is 2.2 mm. If the temperature outside is 36°C and the temperature inside is 26°, calculate the heat flowing into the room every hour. Thermal conductivity of glass is 0.8 Wm^(-1) K^(-1) .

Calculate the rate of loss from a room through a glass window of area 1.5 m^(2) and thickness 2.5 xx 10^(-3) m, when the temperature of the room is 25^(@) C and that of the air outside is 10^(@) C . Assume that the inner glass surface is at the room temperature. [ Thermal conductivity of glass =1.2 "Wm"^(-1) "K"^(-1) ]

What is the rate of energy loss in watt per square metre through a glass window 5 mm thick if outside temperature is -20^@ C and inside temperature is 25^@ C ? ( k_("glass") = 1 W//m K )