Questions from College Physics

Q: A diffraction grating has a second-order resolving power of 1250

A diffraction grating has a second-order resolving power of 1250. (a) Find the number of illuminated lines on the grating. (b) Calculate the smallest difference in wavelengths surrounding 525 nm that...

Q: The Hα line in hydrogen has a wavelength of 656.20

The Hα line in hydrogen has a wavelength of 656.20 nm. This line differs in wavelength from the corresponding spectral line in deuterium (the heavy stable isotope of hydrogen) by 0.18 nm. (a) Determin...

Q: Suppose you’re an astronaut being paid according to the time you spend

Suppose you’re an astronaut being paid according to the time you spend traveling in space. You take a long voyage traveling at a speed near that of light. Upon your return to Earth, you’re asked how y...

Q: A 15.0-cm-long grating has 6.

A 15.0-cm-long grating has 6.00 x 103 slits per centimeter. Can two lines of wavelengths 600.000 nm and 600.003 nm be separated with this grating? Explain.

Q: Monochromatic light is beamed into a Michelson interferometer. The movable mirror

Monochromatic light is beamed into a Michelson interferometer. The movable mirror is displaced 0.382 mm, causing the central spot in the interferometer pattern to change from bright to dark and back t...

Q: Light of wavelength 550. nm is used to calibrate a Michelson

Light of wavelength 550. nm is used to calibrate a Michelson interferometer. With the use of a micrometer screw, the platform on which one mirror is mounted is moved 0.180 mm. How many fringe shifts a...

Q: Mirror M1 in Figure 25.16 is displaced a distance ΔL

Mirror M1 in Figure 25.16 is displaced a distance ΔL. During this displacement, 250 fringe shifts are counted. The light being used has a wavelength of 632.8 nm. Calculate the displacement...

Q: An interferometer is used to measure the length of a bacterium.

An interferometer is used to measure the length of a bacterium. The wavelength of the light used is 650. nm. As one arm of the interferometer is moved from one end of the cell to the other, 310. fring...

Q: The Michelson interferometer can be used to measure the index of refraction

The Michelson interferometer can be used to measure the index of refraction of a gas by placing an evacuated transparent tube in the light path along one arm of the device. Fringe shifts occur as the...

Q: A thin sheet of transparent material has an index of refraction of

A thin sheet of transparent material has an index of refraction of 1.40 and is 15.0 μm thick. When it is inserted in the light path along one arm of an interferometer, how many fringe shifts occur in...