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Subject :NSO    Class : Class 8

Which of the following will change when a person changes his pitch?
(1) Frequency
(2) Amplitude
(3) Wavelength

A(1) only
B(1) and (2) only
C(1) and (3) only
D(1), (2) and (3)


Wavelength will also change, so answer is (C)

Ans 1:

Class : Class 10

Ans 2:

Class : Class 8
speed =frequency*wavelength so frequency is inversely proportional to wavelength so if frequency changes the wavelength will also change

Ans 3:

Class : Class 8
both 1 and 3 should be answers

Ans 4:

Class : Class 10
It should be option c

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