PHY 132 - Midterm 2 Warm up

• Wavelength will decrease, frequency will stay the same.

• Wavelength will increase, frequency will stay the same.

• Wavelength will stay the same, frequency will increase.

• Wavelength will stay the same, frequency will decrease.

If a number of lines per mm on a diffraction grating increases, what will happen to the interference pattern created by the wave?

• The bright spots will move further apart.

• The bright spots will move closer together.

• The positions of bright spots will stay the same, but they will become brighter (more light goes through)

• The positions of bright spots will stay the same, but they will become darker (more distractions)

• -3.2 pC

• -0.32 pC

• -0.32 nC

• -3.2 nC

Two opposite charges are separated by distance r.

If the charges are moved farther apart, which of the following is true?