Physics

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…

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,…

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…

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…

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…

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…

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…

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)…

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.…

Stress to strain ratio is equivalent to

Stress to strain ratio is equivalent to Options (a) Modulus of rigidity (b) Poisson's ratio (c) Reynold number (d) Fund…