A sound of frequency 512 Hz reaches a listener 100 m away...
A sound of frequency 512 Hz reaches a listener 100 m away. If the sound travels in air at s.t.p., what is its wavelength?
[speed of sound in air = 331 m/s]
1.550m
0.646m
5.120m
0.195m
Correct answer is B
f = 512Hz, V = 331m/s λ = ?
V = f λ
λ = vf=331512
λ = 0.646m.
The length of a side of a metallic cube at 20°C is 5.0cm. Given that the linear expansivity of t...
A ball falling through a viscous liquid is acted upon by ...
The primary aim in high tension transmission is to ...
Fusion is not usually used for generating electric power because ...
Which of the following elements is the best absorber of X-rays? ...
Control in nuclear reactors is effected with boron rods because rhe rods have the ability to ...
Which of the following statement about force is correct ? ...