A man hears his echo from a nearby hill 2s after he shout...
A man hears his echo from a nearby hill 2s after he shouted. If the frequency of his voice is 260Hz and the wavelength is 1.29m, how far away is the hill?
330.0m
335.4m
660.0m
670.8m
Correct answer is B
v = λF
260 x 1.29 =335.4ms-1
Echo time = 22 = 1sec.
distance = v x t
= 335.4 x 1 = 335.4m
Which of the following is/are characteristics of sound? I. Pitch II. Loudness III. Quality IV....
In a wave the maximum displacement of particles from their equilibrium positions is called. ...
I. Density of the liquid. II. Acceleration due to gravity. III. Type of container of the liquid. ...
22688Ra → 222866Rn + X + Energy. The equation above represents a nuclear d...
The image in a pin-hole camera is ...
In a projection lantern of focal length f, the object distance u, is such that ...
The diagram above illustrates a Hare's apparatus. e1,e2 represent densi...
Which of the statements about prism binoculars is/are correct? They I. are a pair of two telesco...