Question

1. Human voices in conversational speech are typically at frequencies of around 100 Hz to 300 Hz. Compared to the wavelength of these sound waves, the wavelengths of visible light are

A) much larger

B) much smaller

C) about the same order of magnitude

D) since they are different types of waves, their wavelengths cannot be compared

2. In a double-slit interference experiment, the phase difference between the two waves arriving at a particular point on the screen is 3π. This point on the screen will be a point of

A) constructive interference (bright fringe)

B) destructive interference (dark fringe)

C) neither constructive nor desctructive interference (intermediate)

D)cannot be determined from the information given

3. An experiment is set up to measure the diffraction pattern from a single slit. As the width of the slit decreases (with no other changes to the setup), the width of the central maximum in the diffraction pattern produced on a screen

A) increases

B) decreases

C) stays the same

D) could increase or decrease, depending on the situation

4. An experiment is set up to measure the diffraction pattern from a single slit. As the wavelength of the light source decreases (with no other changes to the setup), the width of the central maximum in the diffraction pattern produced on a screen

A) increases

B) decreases

C) stays the same

D) could increase or decrease, depending on the situation

Answer 1