Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)
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 [...]
Two capacitors C1 = C2 = C are connected with a battery of emf e as shown in figure. The switch S is open for a long time and then closed.
07
Nov
Two capacitors C1 = C2 = C are connected with a battery of emf e as shown in figure. The switch S is open for a long time and then closed. Two capacitors C1 = C2 = C are connected with a battery of emf e as shown in figure. The switch S is open [...]
If the sound level in a room is increased from 50 dB to 60 dB, by which factor is the pressure amplitude increased ?
07
Nov
If the sound level in a room is increased from 50 dB to 60 dB, by which factor is the pressure amplitude increased ? by which factor is the pressure amplitude increased ? If the sound level in a room is increased from 50 dB to 60 dB November 7, 2020 Category: Uncategorised (JEE Advanced [...]
For the network of capacitors as shown in figure. (a) Find the potential of junction B, ( b) Find the potential of junction D, (c) Find the charge on 2 muF capacitor .
07
Nov
For the network of capacitors as shown in figure. (a) Find the potential of junction B, ( b) Find the potential of junction D, (c) Find the charge on 2 muF capacitor . ( b) Find the potential of junction D (c) Find the charge on 2 muF capacitor . For the network of capacitors [...]
A sound differs by 6 dB from a sound of intensity equal to 10 nW/cm^2. Find the absolute value of intensity of the sound.
07
Nov
A sound differs by 6 dB from a sound of intensity equal to 10 nW/cm^2. Find the absolute value of intensity of the sound. A sound differs by 6 dB from a sound of intensity equal to 10 nW/cm^2. Find the absolute value of intensity of the sound. November 7, 2020 Category: Uncategorised (JEE Advanced [...]
Two sound waves from two different sources interfere at a point to yield a sound of varying intensity. The intensity level between the maximum and minimum is 20 dB. What is the
07
Nov
Two sound waves from two different sources interfere at a point to yield a sound of varying intensity. The intensity level between the maximum and minimum is 20 dB. What is the Two sound waves from two different sources interfere at a point to yield a sound of varying intensity. The intensity level between the [...]
A point A is located at a distance r = 1.5 from a point source of sound of frequency 500 Hz. The power of the source is 0.9 W. Speed of sound in air is 360 m/s and density of air
07
Nov
A point A is located at a distance r = 1.5 from a point source of sound of frequency 500 Hz. The power of the source is 0.9 W. Speed of sound in air is 360 m/s and density of air A point A is located at a distance r = 1.5 from a point [...]
For a person with normal hearing, the faintest sound that can be heard at a frequency of 400 Hz has a pressure amplitude of about root 33 * 10^-5 Pa. Calculate the corresponding
07
Nov
For a person with normal hearing, the faintest sound that can be heard at a frequency of 400 Hz has a pressure amplitude of about root 33 * 10^-5 Pa. Calculate the corresponding For a person with normal hearing the faintest sound that can be heard at a frequency of 400 Hz has a pressure [...]