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Q. 45

Expert-verified
Found in: Page 1208

### Physics for Scientists and Engineers: A Strategic Approach with Modern Physics

Book edition 4th
Author(s) Randall D. Knight
Pages 1240 pages
ISBN 9780133942651

# An atom in an excited state has a % chance of emitting a photon in . What is the lifetime of the excited state?

The lifetime of the excited state is .

See the step by step solution

## Step 1: Given Information

We are given that atom in an excited state has achance of emitting a photon in. We need to find the lifetime of the excited state.

## Step 2 : Simplify

We are given with , where is percentage chances of emitting photon and is time for emitting. To find lifetime of excited state, we will use the formula, , whereis rate decay and is lifetime of excited state . Let this be equation.

So we need to find rate decay, we will use the formula ,

Now we will put it in equation , lifetime of excited state