McqMate
| Q. |
Which one of the following statement is correct? |
| A. | radiant energy expressed in joules, is the energy associated with electromagnetic radiation |
| B. | the rate of transfer of radiant energy is called flux and is expressed in watts |
| C. | the radiant energy which falls upon a surface is termed as irradiance |
| D. | all of these |
| Answer» D. all of these | |
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