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A radioactive source, in the form of a metallic sphere of radius 10^−2 m emits β−particles at the rate of 5×1010 particles per second. The source is electrically insulated. How long will it take for its potential to be raised by 2V, assuming that 40% of the emitted β−particles escape the source.
06
Nov
A radioactive source, in the form of a metallic sphere of radius 10^−2 m emits β−particles at the rate of 5×1010 particles per second. The source is electrically insulated. How long will it take for its potential to be raised by 2V, assuming that 40% of the emitted β−particles escape the source. A positively charged [...]
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A positively charged particle starts at rest 25 cm from a second positively charged particle ,
A radioactive source ,
it has reached a velocity of 10(2–√)ms−1 . What is the maximum velocity (∈×10ms−1) that the first particle will reach? ,
which is held stationary throughout the experiment. The first particle is released and accelerates directly away from the second particle. When the first particle has moved 25 cm ,
A wave of frequency 100 Hz is sent along a string towards a fixed end. When this wave travels back after reflection, a node is formed at a distance of 10 cm from the fixed end of the string. The speeds of incident(and reflected) waves are
06
Nov
A wave of frequency 100 Hz is sent along a string towards a fixed end. When this wave travels back after reflection, a node is formed at a distance of 10 cm from the fixed end of the string. The speeds of incident(and reflected) waves are a node is formed at a distance of 10 [...]
A plane wave y = a sin (kx + ct) is incident on a surface. Equation of the reflected wave is : y’ = a’ sin (ct – bx). Then which of the following statements are correct ?
06
Nov
A plane wave y = a sin (kx + ct) is incident on a surface. Equation of the reflected wave is : y’ = a’ sin (ct – bx). Then which of the following statements are correct ? A plane wave y = a sin (kx + ct) is incident on a surface. Equation of [...]
Two waves of equal frequency f and velocity v travel in opposite directions along the same path. The waves have amplitudes A and 3A. Then:
06
Nov
Two waves of equal frequency f and velocity v travel in opposite directions along the same path. The waves have amplitudes A and 3A. Then: Two waves of equal frequency f and velocity v travel in opposite directions along the same path. The waves have amplitudes A and 3A. Then: November 6, 2020 Category: Uncategorised [...]
The intensity of sound wave gets reduced by 20% on passing through a slab. The reduction in intensity on passing through two consecutive slabs is
06
Nov
The intensity of sound wave gets reduced by 20% on passing through a slab. The reduction in intensity on passing through two consecutive slabs is The intensity of sound wave gets reduced by 20% on passing through a slab. The reduction in intensity on passing through two consecutive slabs is November 6, 2020 Category: Arihant [...]
An electic field is given by E = ( yi + xj ) N /C . Find the work done ( in J ) in moving a 1 C charge from rA = ( 2i + 2j ) m to rB = ( 4 i + j ) m
06
Nov
An electic field is given by E = ( yi + xj ) N /C . Find the work done ( in J ) in moving a 1 C charge from rA = ( 2i + 2j ) m to rB = ( 4 i + j ) m An electic field is given by [...]
Following are equations of four waves : (1) y1 = a sin omega (t – x/v) (2) Y2 = a cos omega (t + x/v) (3) z1 = a sin omega (t – x/v) (4) z2 = a cos omega omega (t + x/v)
06
Nov
Following are equations of four waves : (1) y1 = a sin omega (t – x/v) (2) Y2 = a cos omega (t + x/v) (3) z1 = a sin omega (t – x/v) (4) z2 = a cos omega omega (t + x/v) Following are equations of four waves : (1) y1 = a [...]
A radio transmitter at position A operates at a wavelength of 20 m. A second, identical transmitter is located at a distance x from the first transmitter, at position B. The transmitters
06
Nov
A radio transmitter at position A operates at a wavelength of 20 m. A second, identical transmitter is located at a distance x from the first transmitter, at position B. The transmitters A radio transmitter at position A operates at a wavelength of 20 m. A second at position B. The transmitters identical transmitter is [...]
The figure shows four situation in which charges as indicated ( q > 0 ) are fixed on an axis. How many situations is there a point to the leftt of the charges whee an electron would be in equilibrium ?
06
Nov
The figure shows four situation in which charges as indicated ( q > 0 ) are fixed on an axis. How many situations is there a point to the leftt of the charges whee an electron would be in equilibrium ? A positively charged particle starts at rest 25 cm from a second positively charged [...]
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A positively charged particle starts at rest 25 cm from a second positively charged particle ,
it has reached a velocity of 10(2–√)ms−1 . What is the maximum velocity (∈×10ms−1) that the first particle will reach? ,
which is held stationary throughout the experiment. The first particle is released and accelerates directly away from the second particle. When the first particle has moved 25 cm ,
Two waves travel down the same string. These waves have the same velocity, frequency f and wavelength but having different phase constants phi 1 and phi 2 (< phi1) and amplitudes A1
06
Nov
Two waves travel down the same string. These waves have the same velocity, frequency f and wavelength but having different phase constants phi 1 and phi 2 (< phi1) and amplitudes A1 frequency f and wavelength but having different phase constants phi 1 and phi 2 (< phi1) and amplitudes A1 Two waves travel down [...]