# Wavelength and Frequency

Discussion in 'MCAT Study Question Q&A' started by collegelife101, May 14, 2014.

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1. ### collegelife101

34
0
May 2, 2014
As the frequency of a wave is increased, which of the following must decrease?
Period
Amplitude
Wavelength
Speed

The answer was period because it is the inverse, but what about wavelength? Aren't frequency and wavelength proportional?

3. ### jlescher 5+ Year Member

895
80
Feb 16, 2012
MDApps:
If this was talking about electromagnetic waves, then you would be correct in your thinking because the speed of light is constant. For any other wave, you could hold wavelength constant and simply increase the speed. Increasing the speed would cause the frequency to increase without changing anything about wavelength. The key word in this question is "must". Period is the only thing that must change if frequency changes.

DrknoSDN likes this.
4. ### syoungMS-3 5+ Year Member

1,032
75
Jan 2, 2011
Over the rainbow
MDApps:
no?
v = lamda*freq.

oOKawaiiOo likes this.
5. ### pepocho 2+ Year Member

383
85
Mar 13, 2013
.

Last edited: Apr 11, 2016

895
80
Feb 16, 2012
MDApps:
.

7. ### oOKawaiiOo 5+ Year Member

956
662
Jan 21, 2011
Public library computer
Frequency and wavelength are inversely proportional to one another with a constant velocity.