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What is the intensity in W/m2 of a laser beam used to burn away cancerous tissue...
What is the intensity in W / m^2 of a laser beam used to burn away cancerous tissue that puts 757 J of energy into a circular spot 2.00 mm in diameter in 4.50 s? Compare this to the average intensity of sunlight (about 7 0 0 W / m^2 ).
At noon on a sunny day, the intensity of sunlight is 1000 W/m2. A student uses a circular lens 6 cmin diameter to focus light from the sun onto a 3-mm-diameter spot. Part A: How much light power does the lens capture? Part B: What is the intensity in the focused spot?
A He-Ne laser beam with an intensity of 1.00 103 W/m2 is incident from air to ice, perpendicular to the surface of the ice. Find the intensity of the beam transmitted into the ice.
please answer all 6 questions
A monochromatic laser beam of intensity le=553 W/m2 is polarized in the y-direction and propagates in the positive z direction. This beam is incident upon a quarter-wave plate whose fast axis makes an angle of 45 degrees with the x-axis as shown. Following the quarter-wave plate are two polarizers; the transmission axis of the first polarizer is aligned with the x-axis, while the transmission axis of the second polarizer makes an angle of 01 =...