MHT CET questions
29293 published questions with worked solutions.
- 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...
- The coefficients of absorption and transmission of the body are 0.50 and 0.25 respectively. If 200 calories, of radiant heat is...
- Black body is defined as the body
- Which of the following body emits more heat
- Perfectly black body appears black in colour because
- Emissivity of perfectly black body is
- A metal ball has black spots which is high heated and then kept in dark room. After this.
- When a perfect black body is heated, it emits thermal radiation of
- The best ideal black body is
- Which of the following will radiate heat to a large extent?
- If the temperature of a perfectly black body increases two times then the rate of radiation of the body also increases by
- The amount of heat energy radiated per second by a surface depends upon
- SI unit of emissive power is
- A body, which emits radiations of all possible wavelengths, is known as
- Which of the following is the example of ideal black body
- Reflectivity of a perfectly black body is
- Three bodies A, B and C have equal area which are painted red, yellow and black respectively If they are at same temperature then
- Unit of emissive power is