In the formula e = hf . if e is doubled and f is halved , what happens to the value of h?

In the formula e = hf . if e is doubled and f is halved , what happens to the value of h? Correct Answer h is multiplied by 4

2e = h. f/2 h = 4e / f আগে, e = hf h = e/f অর্থাৎ, h এর সাথে 4 গুন হবে।
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