Question

A laser is used in eye surgery to weld a detached retina back into place. The wavelength of the laser beam is 503 nm, while the power is 1.4 W. During surgery, the laser beam is turned on for 0.070 s. During this time, how many photons are emitted by the laser?

Answer 1

Answer:

Number of proton emmitted by laser=
`2.48*10^17proton`

Step-by-step explanation:

Energy is the ability to cause change; power is directly proportional to energy and its the rate energy is utilized.

Power=energy/time.

First we need to calculate the total energy used which is equal to the total power utilized.

E(total)= P( total) = 1.4W × 0.070 s =
`0.098J`

CHECK THE ATTACHMENT FOR THE REMAINING DETAILED CALCULATION