MCQOPTIONS
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				| 1. | 
                                    The transition of electron from energy level W1 to W2 is associated with emission or absorption of electro magnetic radiation of frequency f such that | 
                            
| A. | hf = |W1 - W2| | 
| B. | |W1 - W2|f = h | 
| C. | hf = 0.5|W1 - W2| | 
| D. | (hf)2 = |W1 - W2| | 
| Answer» B. |W1 - W2|f = h | |