Optics Answers

What is bragg equation.

Why does a clarinet play a lower note than a flute when both instrument are about the same length?

Determine the resultant displacement of the superposition of the following harmonic waves

y1 = 7sin(wt + π/3), y2 = 12cos(wt + π/4) and y3 = 20sin(wt + π/5)

A wave goes through air with a velocity of 7.4 × 10^7ms-1. Find the velocity of the wave if the temperature of the air is reduced by a factor of 3

if the focus of a concave mirror is 12 cm from the mirror where is the centre of the curvature

Two physics students are separated 6.80 m and are creating a standing wave interference pattern along a slinky consisting of 5 loops. If the students are vibrating their ends of the slinky with a frequency of 3.10 Hz, calculate the speed of the wave energy.

What is inteference

Calculate the speed of light in glycerol if the index of refraction for glycerol is 1.470.

A football player pushes a football sled with an applied a horizontal force of 103 N for a distance of 15 m. If this exercise took 25 s to complete, calculate the power produced by the football player. 

what is the relation between focal lenght and distance between screen and lenght in normal and myopic eye