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
Properties of Bulk Matter
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
If the cold junction of a thermo-couple is kept at 0⁰C and the hot junction is kept
If the cold junction of a thermo-couple is kept at 0⁰C and the hot junction is kept at T⁰C then…
5 years ago
A body is placed in an insulating container at temperature 227⁰C.
A body is placed in an insulating container at temperature 227⁰C. In order to keep its temperature at 727⁰C, power…
5 years ago
A body of length 1 m having cross-sectional area 0.75 m² has heat flow through it
A body of length 1 m having cross-sectional area 0.75 m² has heat flow through it at the rate of…
5 years ago
If the interatomic spacing in a steel wire is 3.0 Å and Y of steel is
If the interatomic spacing in a steel wire is 3.0 Å and Y of steel is 20x10¹⁰ N/m², then force…
5 years ago
Which of the following statements is correct?
Which of the following statements is correct? Options (a) A good absorber is a bad emitter (b) Every body absorbs…
5 years ago
Which of the following is true for elastic potential energy density?
Which of the following is true for elastic potential energy density? Options (a) Energy density=1/2 x strain x stress (b)…
5 years ago
Which is correct relation?
Which is correct relation? Options (a) Y<σ (b) Y>σ (c) Y=σ (d) σ=±1 Correct Answer: Y>σ Explanation: No explanation available.…
5 years ago