Question

What does (n) represents in the equation tan(0.) =y/L? A student observed the first dark spot area in a diffracting pattern 10 cm away from the center when laser was shined 3 meter away from the wall. Find the angle of deflection. A student was working with a red laser pointer (650 nm) while a second student was using a green lase pointer (532 nm), which laser pointer is more dangerous and why?

Answer 1

tan (on) - Info Here in represents the order of diefraction for first dark spot Y = 10cm = Oilm and L=3m tono = Y - ON _ L 3 O = 0 = Angle of tem (0.0333) 1.909 = 1191 deflection is 1.910 green laser pointer ( 532 nm) is more dangerous because we know that - Energy (E)= hc Shorter wave length lasers have more energy which is very dangerous to our eyes and Other living I thing's ings