Question 1

An object 30 cm high is located 80 cm from a concave mirror, focal length 15 cm.
a.	Where is the image located?

Accepted Answer

18 cm

Answer

-18 cm

Answer

12 cm

Answer

.05 cm

Question 2

A grating with 6000 lines per cm is used with a monochromatic source and gives the first order maximum at and angle of 20.5 degrees.                                                                                                                                        Calculate the wavelength of the source.

Accepted Answer

5.83 E-5 m

Answer

680 E -5

Answer

100 E -5

Answer

363 E -5

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