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Chapter 12 - Wave Motion - 2
The speed of light is more in air(or vaccum) than in glass or water.
When a wave enters from one medium to another its freqency does not change.
The law of reflection of water waves is not identical to law of reflection of light.
A body executing simple harmonic motion, always vibrates about its position of equilibrium.
The snake like motion of the rope is the example of
a) wave motion
b) circulatory motion
c) translatory motion
d) vibratory motion
If we dip a pencil into a tub of water and take it out what will it happen on the surface of water
a) circular ripples are formed
b) it will remain calm and still
c) colour of water is changed
d) water starts flowing
Waves can transfer one of the following from one place to another
b) medium in which waves are produced
Time period is inverse of
The wavelength of the stationary wave is ___________ the distance between two successive nodes or antinodes.
b) four times
d) one fourth
If the mass of bob of a simple pendulum is doubled, its time period
a) becomes half
b) is doubled
c) becomes four times
d) remains the same
Bouncing back of a wave from the surface is called
When an object repeats a set pattern of motion in equal interval of time is known as
a) wave motion
b) linear motion
c) vibratory motion
d) translational motion
When an external force is applied on spring and then released,spring goes back to its equilibrium position due to
a) restoring force
b) electrostatic force
c) gravitational force
d) electromagnetic force
In simple harmonic motion velocity of the object is maximum at
a) only one extreme position
b) all of the above
c) both extreme position
d) the mean position
How many types of mechanical waves are
Invisible waves can be detected with
b) sensitive equipments
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