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Question

En=−313.6n2, if the value of En=−34.84 to which value 'n' corresponds:

A
4
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B
3
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C
2
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D
1
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Solution

The correct option is B 3
Given:
En=313.6n2......(1)
En=34.84......(2)
From (1) and (2)
34.84=313.6n2
n2=313.634.84=9
n=3

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