Yellow light (600 nm) passes through a diffraction grating. Its first
order (m = 1) maximum occurs at
an angle of 21.2°. What is the slit
separation d?

Aplane travels 1000 miles in 5 hours .what is the planes average speed?

Amichelson interferometer operating at a 600 nm wavelength has a 3.02-cm-long glass cell in one arm. to begin, the air is pumped out of the cell and mirror m2 is adjusted to produce a bright spot at the center of the interference pattern. then a valve is opened and air is slowly admitted into the cell. the index of refraction of air at 1.00 atm pressure is 1.00028.how many bright-dark-bright fringe shifts are observed as the cell fills with air?

Debris produced by mining is called