2.0x102Hz
4.5x103Hz
2.0x103Hz
4.5x102Hz
Correct answer is C
Wavelength = 15cm = 0.15m
Velocity = 300m/s
V = fx
F = V/Wavelength
F = 300/0.15 Hertz
F = 2 x 103Hz
The eclipse of the sun occurs when the ...
What is the least possible error in using a rule graduated in centimeters? ...
The resultant capacitance in the figure above is ...
Which of the following instruments gives a pure note when sounded? ...
A solid material of volume 100cm−3 is heated through a temperature difference of 40°C. Calcu...