Physics-
General
Easy
Question
If the speed of sound is changed by 1 percent, the temperature of air near 0°C be changed is
- 5°c
- 6°C
- 5.5°C
- 6.5°C
The correct answer is: 5.5°C
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A wave pulse on a string has the dimension shown in figure. The wave speed is null. If point O is a free end. The shape of wave at time null is
A wave pulse on a string has the dimension shown in figure. The wave speed is null. If point O is a free end. The shape of wave at time null is
Physics-General
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The equation of progressive wave is 
where x,y are in meter and t in second, then
a) Velocity of wave is 50 m/s
b) Maximum velocity of particle is 1m/s
c) Wave length of wave is 2Π meter
The equation of progressive wave is where x,y are in meter and t in second, then
a) Velocity of wave is 50 m/s
b) Maximum velocity of particle is 1m/s
c) Wave length of wave is 2Π meter
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Sound signal is sent through a composite tube as shown in figure. The radius of the semicircle is r. Speed of sound in air is V. The source of sound is capable to generate frequencies in the range null. If n is an integer then frequency for maximum intensity is given by
Sound signal is sent through a composite tube as shown in figure. The radius of the semicircle is r. Speed of sound in air is V. The source of sound is capable to generate frequencies in the range null. If n is an integer then frequency for maximum intensity is given by
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A transverse wave is passing through a light string shown in the figure. The equation of wave is y null The area of cross-section of string is A and density is r . The hanging mass is
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An open pipe resonates to a frequency f1 and a closed pipe resonates to a frequency f2. If they are joined together to form a longer tube, then it will resonate to a frequency of (neglect end corrections)
An open pipe resonates to a frequency f1 and a closed pipe resonates to a frequency f2. If they are joined together to form a longer tube, then it will resonate to a frequency of (neglect end corrections)
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A closed organ pipe has length l. The air in it is vibrating in 3rd overtone with a maximum amplitude of A. Find the amplitude at a distance of l /14 from closed end of the pipe
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Physics-General
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The fundamental frequency of a sonometer wire of length 
is fo. A bridge is now introduced at a distance of Δ from the centre of the wire ( 
<<). The number of beats heard per second if both sides of the bridge are set to vibrate in their fundamental mode is
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Physics-General
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A source S emitting sound of frequency 300Hz is fixed on block A which is attached to the free end of a spring SA as shown in figure. The dectector D fixed on block B attached to free end of spring SB detects this sound. The blocks A and B are simultaneously displaced towards each other through a distance of 1.0m and then left to vibrate. The maximum and minimum frequencies of sound detected by D, if the vibrational frequency of each block is 2Hz are (Velocity of sound v = 340m/s)
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Two stereo speakers are separated by a distance of 2.4 m. A person stands at a distance of 3.2 m as shown directly in front of one of the speakers. The frequencies in audible range for which the listener will hear a minimum sound intensity are (Speed of the sound in air is 320 ms-1 and n is order of minimum)
Two stereo speakers are separated by a distance of 2.4 m. A person stands at a distance of 3.2 m as shown directly in front of one of the speakers. The frequencies in audible range for which the listener will hear a minimum sound intensity are (Speed of the sound in air is 320 ms-1 and n is order of minimum)
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In the given arrangement, if hanging mass will be changed by 4%, then percentage change in the wave speed in string will be
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The vibrating of four air columns are represented in the figure. The ratio of frequencies 
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A pressure of P causes a decrease in volume of water by a fraction ‘Q’. The speed of sound in water is (in CGS)
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Physics-General
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A source of sound produces waves of wave length 48cm. This source is moving towards north with speed V/4 where V is speed of sound. The apparant wavelength of the waves radius ‘r’ so that a maximum of sound is heard at detector is
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Physics-General
