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Chapter 7, Problem 116P

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QUESTION:

A laser is used in treating retina detachment. The wavelength of the laser beam is 514 nm and the power is 1.6 W. If the laser is turned on for 0.060 s during surgery, calculate the number of photons emitted by the laser. (1 W = 1 J/s.)

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QUESTION:

A laser is used in treating retina detachment. The wavelength of the laser beam is 514 nm and the power is 1.6 W. If the laser is turned on for 0.060 s during surgery, calculate the number of photons emitted by the laser. (1 W = 1 J/s.)

ANSWER:

Step 1 of 4

From the given,

Wavelength of the laser beam =  514 nm

The power of laser  = 1.6W

                               =  1.6 J/s

Time  =  0.06 s

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