How much energy in radiated per minute from the filament of an incandescent lamp at 3000 K, if the surface area is `10^(-4)m^(2)` and its emissivity is `0.4`? Stefan's constant `sigma = 5.67 xx 10^(-8) Wm^(-2)K^(-4)`.

How much energy is radiated per minute from the filament of an incandescent lamp at 3000 K , if the surface area is 10^-4 m^2 and it's emissivity is 0.4 ? Stefan's constant sigma = 5.67 × 10^-8 W m^-2 K^-4

Calculate the energy radiated per minute from a filament of an incandescent lamp at 3,000 K if the surface area is 10^(-4) m^(2) and its relative emitted is 0.425.

Calculate the energy radiated per second from the filament of an incandescent lamp at 2000K, if the surface area is 5.0 xx 10^(-5) m^(-2) and its relative emittance is 0.85 & sigma = 5.7 xx 10^(-8) W m^(-2) K^(-4)

Calculate power in watts radiated from a filament of an lamp at 2000 k, if the surface area is 0.5 cm^2 and its emissivity is 0.85 .

The operating temperature of a tungesten filament in an indandescent lamp is 2000 K and its emissivity is 0.3 . Find the surface area of the filament of a 25 watt lamp. Stefan's constant sigma = 5.67xx10^(-8) Wm^(-2)K^(-4)

The operating temperature of a tungesten filament in an indandescent lamp is 2000 K and its emissivity is 0.3 . Find the surface area of the filament of a 25 watt lamp. Stefan's constant sigma = 5.67xx10^(-8) Wm^(-2)K^(-4)

The operating temperature of a tungesten filament in an indandescent lamp is 2000 K and its emissivity is 0.3 . Find the surface area of the filament of a 25 watt lamp. Stefan's constant sigma = 5.67xx10^(-8) Wm^(-2)K^(-4)

A hot body at 800^@C is radiating 500 J of energy per minute. Calculate the surface area of the body if emissivity is 0.23 and Stefan's constant is 5.67 xx 10^(-8) Wm^(-2) K^(.-4) .

What will be the surface area of a filament of 200 W incandescent lamp at 2000 K. sigma = 5.67 xx 10^(-8) Wm^(-2) K^(-4) and emissivity e = 0.3?

The operating temperature of a tungsten filament in an incandescent lamp is 2000 K and it's emissivity is 0.3 . Find the surface area of the filament of a 25 watt lamp. Stefan's constant sigma = 5.67 × 10^-8 W m^-2 K^-4