Author Question: Light from a laser is 1) monochromatic. 2) in phase. 3) coherent. 4) all of the above. ... (Read 53 times)

mynx · **on:** Jul 29, 2018

Light from a laser is

1) monochromatic.
2) in phase.
3) coherent.
4) all of the above.

Compared to the energy put into a laser, the energy of the laser beam is
5) usually much more.
6) much less.
7) the same.

Question 2

The diagram is of a simple spectroscope. If lens 1 were omitted, the resulting spectrum would be

1) much dimmer.
2) upside down.
3) no different.

If, instead, the slit were opened too wide, the middle of the spectrum would appear
4) white.
5) much narrower.
6) black.
7) a broader yellow.