3 - Waves Flashcards
(4 cards)
1
Q
What is the equation to find the nth harmonic frequency for a string of known tension, length, and mass per unit length?
A
f = n/2l * (T/μ)^0.5
2
Q
How does the stretched string change when tension is large?
A
The diameter of the string would be smaller due to it stretching, which would change the mass per unit length
3
Q
What is Snell’s Law?
A
n1sin(θ1) = n2sin(θ2)
4
Q
For a pair of slits which are coherent, monochromatic sources, why is the minimum intensity between a pair of maxima not zero?
A
Given that intensity decreases with distance travelled, one wave travels further than the other so is less intense, meaning the waves do not cancel each other out completely so the intensity is not zero.
