Work Sheet MCQs 1. If the mass of a bob is doubled then period of simple pendulum is a) Increased 2times ...
Work Sheet
MCQs
1.
If the mass of a bob is
doubled then period of simple pendulum is
a)
Increased 2times b) decreased 2times c) remains same
2.
Which one of the following
in an example of simple harmonic motion?
A)
Motion of ceiling fan b) simple pendulum c) a bouncing ball
3.
Waves transfer
a)
Energy b) matter c) wavelength
4.
Which one of the following
is method of energy transfer?
a)
Conduction b) radiation c) all of these
5.
In a vacuum, all
electromagnetic waves have the same
a)
Speed b) wavelength c) frequency
6.
The relation between V, f ,
lenda is
a)
V*f=Lemda b) f=lemda*V c) f*lemda=v
7.
The direction of object in
simple harmonic motion is always towards
a)
Extreme position b) mean position c) in b/w mean and extreme
8.
If a body generating 20
waves per second. What is its frequency?
a)
10 Hz b) 5 Hz c) 20 Hz
9.
If the length of the
pendulum is increased twice then its period is
a)
Increased 2times b) decreased 2times c) remains same
10.
The phenomenon in which
path of wave is changed when move from 1 medium to another
a)
Refraction b) diffraction c) reflection
11.
If time period is doubled
then frequency is
a)
Doubled b) remains same c) reduced to half
12.
The maximum displacement
from mean position in SHM is called
a)
Amplitude b) frequency c) time period
13.
Spring is an example of
----------- waves.
a)
Transverse waves b) longitudinal waves c) radio waves
14.
The wave in the oceans is
the example of ---------- waves
a)
Transverse b) longitudinal c) electromagnetic
15.
A wave has frequency of 50
Hz. It moves with velocity 10 ms-1. Its wavelength is
a)
1 m b ) 0.1 m c) 0.2 m
Short Question:
1.
Do mechanical waves pass
through vacuum, that is, empty space?
2.
Write the terms time
period, frequency, amplitude,
3.
If the length of a simple
pendulum is doubled what will be the change in its time period?
4.
What do you about
reflection and refraction?
5.
What are the transfer waves
and longitudinal waves?
6.
How many types of waves are
there?
7.
What is mechanical wave?
8.
What is radio wave?
9.
What is Damped oscillation?
10.
Find the relation between
velocity and wavelength and frequency.
11.
What are electromagnetic
waves?
Long Question:
1.
What is simple harmonic
motion? Find its relation.
2.
What is meant by wave?
Write a note on types of wave?
Numerical:
1.
The time period of a simple
pendulum is 2s. What will be its length on Earth? What will be its length on
the moon if gm =g /6? Where g= l0ms-2.
2.
A pendulum of length 0.99 m
is taken to the moon by an astronaut. The period of the pendulum is 4.9 s. What
is the value of g on the surface of the moon?
3.
A simple pendulum completes
one vibration in two seconds. Calculate its length when g = 10.0 ms-2.
4.
A transverse wave produced
on a spring has a frequency of 190 Hz and travels along the length of the
spring of 90 m, in 0.5s.
5.
What is the wavelength of
the radio waves transmitted by an FM station at 90 M Hz. where 1M = 106 and
speed of radio wave is 3 x 108 ms-1?
6.
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