**Whatsonna
Topic 4 test****
.:.|** **Go Up**

**Also See the
Review PowerPoint I made for this test - it is most excellent.**

**Cross off one:**

(11:34) – like problem 11:34 - but these are from the old book

(PQ 12.3#3) - PreQuiz 12.3 number 3)

(11-13) – read and be able to apply section 11-13

**1**. Laser beam strikes water
at an angle - VERY much like PreQuiz 12.3

A) What is the Frequency of the light (11:34)

B) What is the wavelength of the laser light in the water? (PQ 12.3#3)

C) Draw a
__ picture__ of refraction/calculate the
angle.(11-13, PQ 12.3#4)

D) Critical Angle (23:40, 23:41, PQ 12.3#5)

E) Double Polarizer question - like example 24-11 on p. 747

**2**. Standing Waves (VERY much like PreQuiz 12.1)

A) **Sketch**
the first three modes of resonance on the string. Find their wavelength and frequency. (11-12)

B) What is the **velocity**
of the waves on the string? (11:34,35)

C) What is the frequency if fingered? (12:27)

D) Drawing wave patterns and finding wavelength on open and closed end pipes. (12:31)

E) Random standing wave problem. (12:29)

**3****.**
Doppler effect (A, B, C are VERY much like PreQuiz 12.2)

A) Find frequency (12:51, PQ12.2#2, #4)

B) Find velocity (PQ 12.2#3, #5)

C) Find Velocity (PQ 12.2#3, #5)

D) If the wavelength is shortened to __ in front of the plane, what is the wavelength behind.

E) Picture of Doppler effect waves as circles from PowerPoint and lecture.

**4**. Two Sources

A) What is the frequency? (11:34)

B) Is it constructive or destructive interference (PQ12.3#1 - also like whiteboards)

C) Is it constructive or destructive interference (PQ12.3#1 - also like whiteboards)

D) Angle of diffraction (like example in diffraction PowerPoint DiffractionAndRayleighCriterion.ppt)

E) Rayleigh criterion problem (like example in diffraction PowerPoint DiffractionAndRayleighCriterion.ppt)