1. $$0.5{\text{s}}l{\sigma _{\text{t}}}$$
  2. $${\text{s}}l{\sigma _{\text{t}}}$$
  3. $$\sqrt 2 {\text{s}}l{\sigma _{\text{t}}}$$
  4. $$2{\text{s}}l{\sigma _{\text{t}}}$$
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1 Answers

Answer: Option 3

Let'

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