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A submarine (A) travelling at 18 km/hr is being chased along the line of its velocity by another submarine (B) travelling at 27 km/hr. B sends a sonar signal of 500Hz to detect A and receives a reflected sound of frequency v. The value of v is close to : (Speed of sound in water = 1500ms^−1 )
07
Nov
A submarine (A) travelling at 18 km/hr is being chased along the line of its velocity by another submarine (B) travelling at 27 km/hr. B sends a sonar signal of 500Hz to detect A and receives a reflected sound of frequency v. The value of v is close to : (Speed of sound in water [...]
Is there a Doppler effect in the case of sound when the observer or the source moves at right angles to the line joining them ? How then can we determine the Doppler effect when
07
Nov
Is there a Doppler effect in the case of sound when the observer or the source moves at right angles to the line joining them ? How then can we determine the Doppler effect when Is there a Doppler effect in the case of sound when the observer or the source moves at right angles [...]
Three capacitors C1 , C2 and C3 are arranged as shown in figure. Determine the charge on each capacitor.
07
Nov
Three capacitors C1 , C2 and C3 are arranged as shown in figure. Determine the charge on each capacitor. C2 and C3 are arranged as shown in figure. Determine the charge on each capacitor. Three capacitors C1 November 7, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
A source of sound S is moving with a velocity of 50m/s towards a stationary observer. The observer measures the frequency of the source as 1000 Hz. What will be the apparent frequency of the source as 1000 Hz. What will be the apparent frequency of the source when it is moving away from the observer after crossing him? The velocity of the sound in the medium is 350 m/s
07
Nov
A source of sound S is moving with a velocity of 50m/s towards a stationary observer. The observer measures the frequency of the source as 1000 Hz. What will be the apparent frequency of the source as 1000 Hz. What will be the apparent frequency of the source when it is moving away from the [...]
What is the maximum possible sound level is dB of sound waves in air ? Given that density of air is 1.3 kg/m^3, v = 332 m/s and atmospheric pressure P = 1.01 * 10^5 N/m^2.
07
Nov
What is the maximum possible sound level is dB of sound waves in air ? Given that density of air is 1.3 kg/m^3, v = 332 m/s and atmospheric pressure P = 1.01 * 10^5 N/m^2. v = 332 m/s and atmospheric pressure P = 1.01 * 10^5 N/m^2. What is the maximum possible sound [...]
A 10μF capacitor is charged to 15V. It is next connected in seties with an uncharged 5μf capacitor. The series cambination is finally connected across a 30V battery, as shown in. Find the new potential differnce across the 5μF and 10μF capacitors.
07
Nov
A 10μF capacitor is charged to 15V. It is next connected in seties with an uncharged 5μf capacitor. The series cambination is finally connected across a 30V battery, as shown in. Find the new potential differnce across the 5μF and 10μF capacitors. A 10μF capacitor is charged to 15V. It is next connected in seties [...]
The correct figure that shows, schematically, the wave pattern produced by superposition of two waves of frequencies 9Hz and 11Hz is :
07
Nov
The correct figure that shows, schematically, the wave pattern produced by superposition of two waves of frequencies 9Hz and 11Hz is : schematically The correct figure that shows the wave pattern produced by superposition of two waves of frequencies 9Hz and 11Hz is : November 7, 2020 Category: Chapter 10 - Oscillation and Waves , [...]
The power of sound from the speaker of a radio is 20 mW. By turning the knob of volume control the power of sound is increased to 400 mW. What is the power increase in dB as compared
07
Nov
The power of sound from the speaker of a radio is 20 mW. By turning the knob of volume control the power of sound is increased to 400 mW. What is the power increase in dB as compared The power of sound from the speaker of a radio is 20 mW. By turning the knob [...]
In the system is in steady state. Then a. VA−VB=_______ b. VB−VC=______ c. VD−Ve=______ d. The energy stored in the circuit is “________”`
07
Nov
In the system is in steady state. Then a. VA−VB=_______ b. VB−VC=______ c. VD−Ve=______ d. The energy stored in the circuit is “________”` In the system is in steady state. Then a. VA−VB=_______ b. VB−VC=______ c. VD−Ve=______ d. The energy stored in the circuit is "________"` November 7, 2020 Category: Uncategorised (JEE Advanced Physics by [...]
A windows whose area is 2 m^2 opens on street where the street noise result in an intensity level at the window of 60 dB. How much ‘acoustic powder’ enters the window via
07
Nov
A windows whose area is 2 m^2 opens on street where the street noise result in an intensity level at the window of 60 dB. How much ‘acoustic powder’ enters the window via A windows whose area is 2 m^2 opens on street where the street noise result in an intensity level at the window [...]