A Solid State Pulsed Laser Has an Energy of 400

question 45

Multiple Choice

A solid state pulsed laser has an energy of 400 mJ per pulse.If its wavelength is 1.06 *10 ^{- 6} m,how many photons are in each pulse?

• A)2*10²⁵
• B)2 *10²¹
• C)3 *10¹⁸
• D)6 * 10³⁸
• E)2 * 10¹⁸

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