Embibe Experts Solutions for Chapter: Heat Transfer, Exercise 1: Exercise 1
Embibe Experts Physics Solutions for Exercise - Embibe Experts Solutions for Chapter: Heat Transfer, Exercise 1: Exercise 1
Attempt the practice questions on Chapter 14: Heat Transfer, Exercise 1: Exercise 1 with hints and solutions to strengthen your understanding. Physics Crash Course NDA & NA EE solutions are prepared by Experienced Embibe Experts.
Questions from Embibe Experts Solutions for Chapter: Heat Transfer, Exercise 1: Exercise 1 with Hints & Solutions
Two identical metal wires of thermal conductivities and respectively are connected in series. The effective thermal conductivity of the combination is:
If the surface is a perfect reflector, the change in momentum of the wave after falling on the surface is
A black body at high temperature emits radiations of
| (A) | The energy emitted versus wavelength plot of a black body depends on the material of the black body. |
| (B) | The emissivity of a completely reflecting surface is zero. |
| (C) | Emissivity is equal to . |
| (D) | Black-body radiates more than normal body Which of the following is correct? |
If temperature of surface of sun becomes half then the energy emitted by it to earth per second will reduce to -
If temperature of black body increases from to then the rate of radiation increases by
A black body at emits radiations with maximum intensity at a wavelength of If the temperature of the body is increased by the maximum intensity will be at
A cube, a cylinder (of height equal to its diameter) and a sphere, all solid, are made of metal and are of identical mass. If all the three shapes having initial temperature are put in a large reservoir of water at Which of the above three shapes cools the fastest?
