NEW
Font size
WorksheetsPhysics Quarter-2
Total questions: 40
Worksheet time: 3600secs
The time period of a simple pendulum is 2sec. If the length is increased by 4 times, then its period become
16 sec
12 sec
8 sec
4 sec
The Laplace correction in the expression for the velocity of sound is needed because sound waves
Are of long wavelength
Propagate isothermally
Propagate adiabatically
Are longitudinal
A system exhibiting S.H.M must have
Elasticity, inertia and an external force
Elasticity as well as inertia
Elasticity only
Inertia only
Doppler shift in frequency is independent of
Distance from source to observer
The speed of source
The speed of observer
The frequency of waves produced
By rubbing the objects together, their internal energy:
Remains constant
Decreases
Increases
Becomes zero
The ratio of fundamental wavelengths of one end close pipe to the both end open
pipe having same lengths
1 : 4
4 : 1
1 : 2
2 : 1
The total energy of a particle executing SHM of amplitude xo is independent to
x0
x02
1/x0-2
x
Which type of wave is used in submarine navigation system
Transverse
Longitudinal
Both
None
If Cp=56 KJ and Cv=28 KJ then find number of moles.
2.36
3.36
4.36
5.36
Which of the following quantities is non-zero at the mean position for a particle
executing SHM?
Force
Acceleration
Velocity
Displacement
Instantaneous velocity of a body executing S.H.M at it mean position is
ωx02−x2
ωx02
ωx2
Zero
The first resonance length in a closed pipe is 20 cm then second resonance occurs at
60 cm
90 cm
120 cm
None
In a stationary wave, the particle velocity at the nodal points is
Zero
Minimum but not zero
Maximum and finite
Infinity
In a stationary wave the distance between consecutive antinodes is 25 cm. If the
wave velocity is 300 ms–1, then the frequency of wave will be
300 Hz
150 Hz
750 Hz
600 Hz
When both source and listener move in the same direction with a velocity equal to
half the velocity of sound, the change in frequency of the sound as detected by the listener is:
Zero
25%
50%
None of these
At what temperature the speed of sound in air will be 1.5 times its value at 27oC in air?
102oC
202oC
204oC
402oC
The isothermal elasticity of a medium is Ei and the adiabatic elasticity is Ea. The
velocity of the sound in the medium is proportional to
Ei
Eiγ
Ea
Ei
Which of the following has maximum audible frequency range?
Dolphin
Cat
Bat
Dog
Velocity of sound is greatest in
Water
Air
Copper
Amonia
Which one is the correct relation for fundamental frequency of open and closed
pipe?
fopen = 2 fclosed
fclosed = 2 fopen
fopen = fclosed
fopen = fclosed1
The speed of stationary waves in a stretched string are independent of
Number of loops
Tension in the string
Point where string is plucked
Both A and C
During which process the volume of system remains constant
Isothermal
Isobaric
Isochoric
Adiabatic
A wave transfers
Energy
Momentum
No mass
All are possible
Extremely loud sound produced by a sounding source moving at a speed greater
than the speed of sound is________
Relativistic limit
Red shift
Sonic boom
Blue shift
Which one is true for an isothermal process?
Q = w
W = 0
Q = 0
W = – Δ U
The time taken by a particle to travel between a trough and a crest in a transverse wave is
T
3T/4
T/2
T/4
It is possible to distinguish between transverse and longitudinal waves form the property of
Refraction
Polarization
Interference
Diffraction
Doppler effect applies to
Soundwave only
Light wave only
Both sound and light waves
Neither sound nor light wave
Which one of the following statements is true for the speed v and the acceleration a of a particle executing simple harmonic motion?
When v is maximum, a is maximum
Value of a is zero, whatever may be the value of v
When v is zero, a is zero
When v is maximum, a is zero
A stationary wave is set up in the air column of a closed pipe. At the closed end of the pipe.
Always a node is formed
Always an antinode is formed
Neither nod nor antinode is formed
Sometimes a node and sometimes an antinode is formed
A sound wave of wavelength 0.60 cm is produced in air and it travels at a speed of
300 ms-1. It will be an
Audible wave
Infrasonic wave
Ultrasonic wave
super sonic
Consider the standing wave pattern shown below. A wave generated at the left end of the medium undergoes reflection at the fixed end on the right side of the medium. The number of antinodes in the diagram is
3.0
5.0
6.0
7.0
A source of sound wave emits wave of frequency f. If ‘v’ is speed of sound waves. Then what will be the wavelength of the wave
fv
fv−u
vf
(v - u)f
The ratio of phase difference and path difference is:
2P
λ2π
2πλ
λπ
The internal energy of 1 mole of an ideal gas depends on:
Only volume
Only temperature
Only pressure
Temperature and pressure
Two light waves being produced by two sources S1 and S2. Both sources have zero phase difference and have wavelength λ. The destructive interference of both the waves will occur of point P if (S1P – S2P) has the value
211λ
43λ
2 λ
5 λ
A system undergoes an adiabatic process in which its internal energy increases by 20 J. Which of the following statements is true?
20 J of work was done on the system
20 J of work was done by the system
The system received 20 J of energy as heat
The system lost 20 J of energy as heat
How much heat is needed to raise the temperature of 0.5 kg of water from 0°C to 100° C? (for water, c = 4186 J / kg°CJ
236 kJ
209 kJ
124 kJ
625 kJ
A system is provided with 200 cal of heat and the work done by the system on the
surrounding is 40 J. Then its internal energy
Increases by 600 J
Decreases by 800 J
Increases by 800 J
Decreases by 50 J
A particular set up gives the following frequencies 150 Hz, 450 Hz, 750 Hz …… the setup is
A tube open at both ends
A tube open at one end and closed at the other
A wire stretched between two fixed ends
A tuning fork
