Select Board & Class

Login
Rashmika B asked a question
Subject: Physics, asked on on 9/5/17
A heavy but uniform rope of length L is suspended from a ceiling.A particle is dropped from ceiling.At the same instant,the bottom end is given a jerk.Find velocity of wave pulse at an instant when particle and pulse are at same level
Rashmika B asked a question
Subject: Physics, asked on on 16/5/17
A wire having a linear density 0.1kg/m is kept under a tension of 490 N. It is observed that it resonates at a frequency of 400Hz. The next higher frequency is 450 Hz. Find the length of the wire
Taher Mustafabhai Vasanwala asked a question
Subject: Physics, asked on on 3/3/17
the particles of a medium vibrate about thier mean positions whenever a wave travels through that medium. the phase difference between the vibrations of two such particles.
a)varies with time
b)varies with distance separating them
c)varies with time as well as distance
d)is always zero
Sai Prasad B asked a question
Subject: Physics, asked on on 23/4/17
Pls answer this
An observer is moving with half the speed of light towards a stationary microwave source emitting waves at frequency 10 GHz. What is the frequency of the microwave measured by the observer ? (speed of light = 3 × 108 ms –1)
Rashmika B asked a question
Subject: Physics, asked on on 13/2/17
if the velocity of sound in air at 0 degrees celsius is 332 m/s,at what temperature will the velocity be half of that velocity
Taher Mustafabhai Vasanwala asked a question
Subject: Physics, asked on on 3/3/17
sound waves in air are always longitudinal because,
a)of the inherent characteristics of sound waves in air
b)air does not have modulus of rigidity
c)air is a mixture of several gases
d)density of air is very small
Taher Mustafabhai Vasanwala asked a question
Subject: Physics, asked on on 3/3/17
with the propagation of a longitudinal wave through a material medium,the quantities transmitted in the propagation direction are
a)energy,momentum and mass
b)energy
c)energy and mass
d)energy and linear momentum
Rashmika B asked a question
Subject: Physics, asked on on 4/5/17
Acceleration of point x = 2m of a transverse wave is 5 j^m/s^2 and the slope of the waveform is given by dy/dx = 5sin (pi*x)/12 . Then the speed of the point at that instant is given in m/s as
Krushna Krushna asked a question
Subject: Physics, asked on on 5/9/17
when the 2 waves interfere does one alter the progress of other
Manasi Mujumdar asked a question
Subject: Physics, asked on on 5/10/17
Two uniform stretched wires A and B made of steel are vibrating under the same tension. If the first overtone of A is equal to the second overtone of B and if the radius of A is twice that of B, the ratio olf the lengths of the strings is?
Bhavya Arora asked a question
Subject: Physics, asked on on 17/2/18
The speed of sound in air is 332m/s at 0 C. At what temperature the speed become one halg of that of 0 C
Bhavya Arora asked a question
Subject: Physics, asked on on 2/1/18
A source of sound has a frequency of 1000Hz. It is moving away from the person who is at rest with respect to the ground towards a cliff with a speed of 10m/s A) the frequency of sound coming directly from the the source and heard by the person B) the frequency of the sound reflected from the cliff and heard by the person.
Bhavya Arora asked a question
Subject: Physics, asked on on 2/1/18
A car is moving with a speed of 18km/hr . The car pases a check post ,where a siren is producing sound waves of frequency 300 Hz . Determine the change in the frequency heard by the driver of the car just as he pases the check post
Rashmika B asked a question
Subject: Physics, asked on on 23/2/17
in a sonometer experiment with a metallic block suspended from a wire the resonant length for the fundamental frequency is found to be 14.2 cm.Immersing it in water the length was 13.1 cm. Calculate the relative density of the material of the block
Taher Mustafabhai Vasanwala asked a question
Subject: Physics, asked on on 3/3/17
most of human ears cannot hear sound of intensity less than,
a) 1 w/m2
b) 5 w/m2
c) 10 w/m2
d) 100 w/m2
Shubhrajyoti Ghosh asked a question
Subject: Physics, asked on on 4/2/17
The velocity of sound in oxygen at 0 oC is 320 m/s. What will be the velocity of sound in methane gas at 27 oC? (Given gamma of methane gas= 4/3)
[Answer = 463m/s]
NO LINK PLEASE
Aryan asked a question
Subject: Physics, asked on on 17/2/18
What is Serale's experiment?
Shubhrajyoti Ghosh asked a question
Subject: Physics, asked on on 4/2/17
The wavelength of the sound emitted from a tuning fork at 27.3 oC is 1m. What will be the wavelength in the same medium at 0 oC?
[Answer :  95 cm]
​NO LINKS PLEASE
Devjeet asked a question
Subject: Physics, asked on on 24/3/17
In the derivation of velocity of a wave on a string, a/c to HCV book, it is assumed that the particles move in an approximately circular path but actually the particles only move up and down a string and not sideways. How is this possible? Also the weight force is not taken into account. Please explain.
Shubhrajyoti Ghosh asked a question
Subject: Physics, asked on on 4/2/17
The density of water at STP is 775 times that of air. If the velocity of  sound in water is 9/2 times that in air, what will be the ratio of bulk modulus of water and air?
[Answer : 15700 : 1]
NO LINKS PLEASE
Riya S Vanave asked a question
Subject: Physics, asked on on 30/12/17
sir i have doubt.....
how there there is 180 degree phase shift in the resultant wave?
AND
what is the basic concept behind the oscillations?
Neha Nilesh Patil asked a question
Subject: Physics, asked on on 15/4/19
how to prove that to see a image of a person the mirror required is half of the persons height?
Dev asked a question
Subject: Physics, asked on on 17/12/19
how to solve waves question easily?
What are you looking for?

Syllabus