Thermal Properties of Matter questions
823 published questions with worked solutions.
- The coefficient of the absorption of thermal radiation of body is
- The sum of the absorptance, reflectance and transmittance of a body is
- The substance which are transparent to thermal radiation are
- A good absorber is a
- The diathermanous is
- Good absorbers of heat are:
- Good absorbers of heat are:
- The substances through which heat radiations can pass are called as :
- The substances through which heat radiations can not pass are called as :
- For athermanous substances, coefficient of transmission is :
- If an athermanous body absorbs 30% of the incident radiant energy, then reflection coefficient of the body is :
- Out of 10 J of radiant energy incident on a surface, the energy absorbed by the surface is 2 J and the energy reflected is 6 J....
- 512 calories of radiant heat are incident on a body which absorbs 224 calories. What is its coefficient of emission?
- The coefficient of absorption of the surface of a body is 0.68. When 100 calories of heat are incident on the body 27 calories...
- An athermanous metal plate has the coefficient of absorption 0.65. Its coefficient of reflection is:
- Heat is incident at the rate of 10 W on an opaque body having emissivity 0.8. Find the quantity of radiant heat reflected by it...
- The coefficients of absorption and reflection of the surface of a thin plate are 0.74 and 0.22 respectively. If 150 J of radiant...
- Out of 10 J of radiant energy incident on a surface, the energy absorbed by the surface is 2 J and the energy reflected is 7 J....
- If an athermanous body absorbs 20 % of the incident radiant energy, then reflection coefficient of the body is
- The coefficients of absorption and reflection of the surface of a body are 0.70 and 0.25 respectively. If 200 calories of radiant...
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