10th Class Physics MCQS
Ripple tank is an instrument which is used to study the characteristics of:
Light waves
Radio waves
Mechanical waves
Electro magnet waves
If the intensity of faintest audible sound is Io and of another sound is I then sound level will be:
K log I/Io
K log Io/I2
K log Io/I
Log Io/I 2K
The oscillations of a system in the presence of which force are called damp oscillations:
Attractive force
Resistive force
Coulomb force
Both a and b
The waves, which are used to detect the broken bones are called:
Light waves
sound waves
both b and c
x-rays
At mean position kinetic energy of the ball is:
10 J
Minimum
Maximum
Zero
The character by which lound and faint sound can be distinguished is called:
Quality
Loudness
Intensity
Pitch
the waves have properties:
reflection
diffraction
all of these
refraction
the motion in which the friction reduces the mechanical energy of the system as time passes and the amplitude of motion reduces is called:
Circulatory motion
Random motion
Damped motion
SHM
The speed of sound is air at 21 oC is:
336 ms 1
343 ms-1
470 ms 1
430 ms 1
The maximum displacement from mean position is called:
Interval
Amplitude
Time period
Maximum height
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