Two metal rods 1 and 2 of same lengths have same temperature difference
Two metal rods 1 and 2 of same lengths have same temperature difference between their ends. Their thermal conductivities are…
5 years ago
Questions
The breaking stress of a wire depends upon
The breaking stress of a wire depends upon Options (a) Length of wire (b) Radius of wire (c) Material of…
5 years ago
The molar specific heats of an ideal gas at constant pressure and volume are denoted
The molar specific heats of an ideal gas at constant pressure and volume are denoted by Cp and Cv, respectively.…
5 years ago
The temperature of a body falls from 50⁰C to 40⁰C in 10 minute. If the temperature
The temperature of a body falls from 50⁰C to 40⁰C in 10 minute. If the temperature of the surroundings is…
5 years ago
A uniform plank of Young’s modulus Y is moved over a smooth horizontal surface
A uniform plank of Young's modulus Y is moved over a smooth horizontal surface by a constant horizontal force F.…
5 years ago
A piece of iron is heated in a flame. It first comes dull red then becomes reddish
A piece of iron is heated in a flame. It first comes dull red then becomes reddish yellow and finally…
5 years ago
The maximum wavelength of radiations emitted at 900K is 4 µm. What will be the maximum
The maximum wavelength of radiations emitted at 900K is 4 µm. What will be the maximum wavelength of radiations emitted…
5 years ago
The area of cross-section of a steel wire (Y=2.0×10¹¹ N/m²) is 0.1 cm².
The area of cross-section of a steel wire (Y=2.0x10¹¹ N/m²) is 0.1 cm². The force required to double its length…
5 years ago
Shearing stress causes change in
Shearing stress causes change in Options (a) Length (b) Breadth (c) Shape (d) Volume Correct Answer: Shape Explanation: No explanation…
5 years ago
A black body radiates 20 W at temperature 227⁰C. It temperature of the black body
A black body radiates 20 W at temperature 227⁰C. It temperature of the black body is changed to 727⁰C, then…
5 years ago