If the radius of star is R and it acts as a black body, what would be the temperature
If the radius of star is R and it acts as a black body, what would be the temperature of…
5 years ago
Questions
Water rises in a vertical capillary tube up to a height of 2.0 cm.
Water rises in a vertical capillary tube up to a height of 2.0 cm. If the tube is inclined at…
5 years ago
The total radiant energy per unit area, normal to the direction of incidence
The total radiant energy per unit area, normal to the direction of incidence, received at a distance R from the…
5 years ago
Heat is flowing through a rod of length 50 cm and area of cross-section 5 cm².
Heat is flowing through a rod of length 50 cm and area of cross-section 5 cm². Its ends are respectively…
5 years ago
A liquid wets a solid completely. The meniscus of the liquid in a sufficiently long
A liquid wets a solid completely. The meniscus of the liquid in a sufficiently long tube is Options (a) Flat…
5 years ago
A black body at 227⁰C radiates heat at the rate of 7cals/cm²s. At a temperature
A black body at 227⁰C radiates heat at the rate of 7cals/cm²s. At a temperature of 727⁰C, the rate of…
5 years ago
The two ends of a rod of length L and a uniform cross-sectional area
The two ends of a rod of length L and a uniform cross-sectional area A are kept at two temperatures…
5 years ago
A body takes 5 minute for cooling from 50⁰C to 40⁰C. Its temperature
A body takes 5 minute for cooling from 50⁰C to 40⁰C. Its temperature comes down to 33.33⁰C in next 5…
5 years ago
Assuming the sun to have a spherical outer surface of radius r
Assuming the sun to have a spherical outer surface of radius r, radiating like a black body at temperature t⁰C,…
5 years ago
An ideal black body is equivalent to
An ideal black body is equivalent to Options (a) Hot sodium lamp (b) Tungsten filament (c) Hot lampblack (d) Small…
5 years ago