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WorksheetsSound and Light
Total questions: 25
Worksheet time: 17mins
The range of frequency for a healthy human ear is ...
20 Hz - 2000 Hz
2 Hz - 200 Hz
20 Hz - 20000 Hz
2 Hz - 20000 Hz
What do you mean by ultrasound?
above the animal hearing range
above the human hearing range
below the animal hearing range
below the human hearing range
The speed of sound in air is 340 m/s. If the frequency of the sound produced by a source is 20Hz, calculate the wavelength of the sound.
17m
1.7m
0.17m
0.017m
A reflected sound wave is an (a)
Sound wave is a ______ wave.
transverse
longitudinal
tidal
normal
A flute is a _____ instrument.
Stringed
Percussion
Wind
None of the choices
The law of reflection states that the angle of incidence is equal to the ...
critical angle
angle of diffraction
angle of refraction
angle of reflection
In the figure, what letter represents the image?
(a)
Where is the object?
P
Q
R
S
What letter represents the principal focus?
(a)
What number represents the crest of the wave?
1
2
3
4
5
What number represents the amplitude of the wave?
2
4
6
7
1
What number represents the wavelength?
2
4
6
7
1
The time for one complete vibration is ...
(a)
Loudness depends on the _____ of the sound produced
nodes
frequency
amplitude
period
Two waves A and B, which of the following is TRUE?
A has the same frequency as B
B has a higher frequency than A
A has a higher frequency than B
None of the choices
Which of the following statements is NOT true?
A and B have different amplitude
A and B have the same amplitude
A has a higher frequency than B
A and B have different frequencies
In the figure, the angle of incidence is...
(a)
In the figure, the reflected ray is...
(a)
In the figure, the normal is...
(a)
In the figure, the incident ray is...
(a)
When light passes from less dense to a denser environment, the refracted ray...
in a straight line with the incident ray
bends away from the normal
bends towards the normal
bounces back
A ray of light passes through a glass as shown in the figure. The refractive index of the glass is...
0.5
0.67
1.67
1.5
In this diagram, the image formed is...
Erected
Inverted
Slanted
Blurred
What type of lens is used in this diagram?
Converging
Diverging
Concave
Super
