A. 12.5s
B. 9.0s
C. 5.1s
D. 0.5s

Correct Answer: Option B

B. 9.0s

Explanation

T = 0.692/λ=0.692/0.077

= 9s

SEE ALSO  A cell can supply current of 0.4 A and 0.2 A through a 4.0Ω and 10.0Ω resistors respectively. This internal resistance of the cell is?

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