The temperature of a metal block is increased from 27⁰C to 84⁰C. The rate of radiated energy
The temperature of a metal block is increased from 27⁰C to 84⁰C. The rate of radiated energy from the block…
5 years ago
Questions
Radius of a soap bubble is increased from R to 2R. Work done in this process
Radius of a soap bubble is increased from R to 2R. Work done in this process in terms of surface…
5 years ago
Two bubbles A and B (A>B) are joined through a narrow tube. Then
Two bubbles A and B (A>B) are joined through a narrow tube. Then Options (a) The size of A will…
5 years ago
The earth radiates in the infrared region of the spectrum. The spectrum is correctly
The earth radiates in the infrared region of the spectrum. The spectrum is correctly given by Options (a) Wien's law…
5 years ago
Consider a compound slab consisting of two different materials having equal thickness
Consider a compound slab consisting of two different materials having equal thickness and thermal conductivities K and 2K respectively. The…
5 years ago
Young’s modulus of perfectly rigid body material is
Young's modulus of perfectly rigid body material is Options (a) Zero (b) Infinity (c) 1x10¹⁰ N/m² (d) 10x10¹⁰ N/m² Correct…
5 years ago
A wire of length 2 m is made from 10 cm³ of copper. A force F is applied so that
A wire of length 2 m is made from 10 cm³ of copper. A force F is applied so that…
5 years ago
Which of the following is an example of ideal black body?
Which of the following is an example of ideal black body? Options (a) Kajal (b) Black board (c) A pin…
5 years ago
In the Young’s modulus experiment, if length of wire and radius both are doubled,
In the Young's modulus experiment, if length of wire and radius both are doubled, then the value of Y will…
5 years ago
According to Hook’s law, force is proportional to
According to Hook's law, force is proportional to Options (a) 1/r (b) 1/r² (c) r (d) r² Correct Answer: r…
5 years ago