JEE Mains Physics 2002-2019 Solved Video Solutions
An electron of mass me and a proton of mass mp = 1836 me are moving with the same speed. The ratio of their de Broglie wavelength λelectron /λproton will be:
26
Sep
An electron of mass me and a proton of mass mp = 1836 me are moving with the same speed. The ratio of their de Broglie wavelength λelectron /λproton will be: An electron of mass me and a proton of mass mp = 1836 me are moving with the same speed. The ratio of their [...]
An LCR circuit contains resistance of 110 Ω and a supply of 220 V at 300 rad/s angular frequency. If only capacitance is removed from the circuit, current lags behind the voltage by 45°. If on the other hand, only inductor is removed the current leads by 45° with the applied voltage. The rms current flowing in the circuit will be
26
Sep
An LCR circuit contains resistance of 110 Ω and a supply of 220 V at 300 rad/s angular frequency. If only capacitance is removed from the circuit, current lags behind the voltage by 45°. If on the other hand, only inductor is removed the current leads by 45° with the applied voltage. The rms current [...]
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An LCR circuit contains resistance of 110 Ω and a supply of 220 V at 300 rad/s angular frequency. If only capacitance is removed from the circuit ,
current lags behind the voltage by 45°. If on the other hand ,
only inductor is removed the current leads by 45° with the applied voltage. The rms current flowing in the circuit will be ,
The wavelength of the photon emitted by a hydrogen atom when an electron makes a transition from n = 2 to n = 1 state is
26
Sep
The wavelength of the photon emitted by a hydrogen atom when an electron makes a transition from n = 2 to n = 1 state is The wavelength of the photon emitted by a hydrogen atom when an electron makes a transition from n = 2 to n = 1 state is September 26, 2021 [...]
A charge ‘q’ is placed at one corner of a cube as shown in figure. The flux of electrostatic field E through the shaded area is :
26
Sep
A charge ‘q’ is placed at one corner of a cube as shown in figure. The flux of electrostatic field E through the shaded area is : A charge 'q' is placed at one corner of a cube as shown in figure. The flux of electrostatic field E through the shaded area is : September [...]
If a message signal of frequency ′ fm ′ is amplitude modulated with a carrier signal of frequency ′fc′ and radiated through an antenna, the wavelength of the corresponding signal in air is :
26
Sep
If a message signal of frequency ′ fm ′ is amplitude modulated with a carrier signal of frequency ′fc′ and radiated through an antenna, the wavelength of the corresponding signal in air is : If a message signal of frequency ′ fm ′ is amplitude modulated with a carrier signal of frequency ′fc′ and radiated [...]
Two identical springs of spring constant ‘2k’ are attached to a block of mass m and to fixed support (see figure).When the mass is displaced from equilibrium position on either side, it executes simple harmonic motion. The time period of oscillations of this system is :
26
Sep
Two identical springs of spring constant ‘2k’ are attached to a block of mass m and to fixed support (see figure).When the mass is displaced from equilibrium position on either side, it executes simple harmonic motion. The time period of oscillations of this system is : it executes simple harmonic motion. The time period of [...]
A stone is dropped from the top of a building. When it crosses a point 5 m below the top, another stone starts to fall from a point 25 m below the top. Both stones reach the bottom of building simultaneously. The height of the building is :
26
Sep
A stone is dropped from the top of a building. When it crosses a point 5 m below the top, another stone starts to fall from a point 25 m below the top. Both stones reach the bottom of building simultaneously. The height of the building is : A stone is dropped from the top [...]
Thermodynamic process is shown below on a P – V diagram for one mole of an ideal gas. If V2 = 2V1 then the ratio of temperature T2/T1 is :
26
Sep
Thermodynamic process is shown below on a P – V diagram for one mole of an ideal gas. If V2 = 2V1 then the ratio of temperature T2/T1 is : Thermodynamic process is shown below on a P - V diagram for one mole of an ideal gas. If V2 = 2V1 then the ratio [...]
The potential energy (U) of a diatomic molecule is a function dependent on r (interatomic distance) as U = a/r^10 – b/r^5 – 3 where, α and β are positive constants. The equilibrium distance between two atoms will be (2α/β)^a/b, where a = ____.
26
Sep
The potential energy (U) of a diatomic molecule is a function dependent on r (interatomic distance) as U = a/r^10 – b/r^5 – 3 where, α and β are positive constants. The equilibrium distance between two atoms will be (2α/β)^a/b, where a = ____. The potential energy (U) of a diatomic molecule is a function [...]
A monoatomic gas of mass 4.0 u is kept in an insulated container. Container is moving with velocity 30 m/s. If container is suddenly stopped then change in temperature of the gas (R = gas constant) is x/(3R). Value of x is ___.
26
Sep
A monoatomic gas of mass 4.0 u is kept in an insulated container. Container is moving with velocity 30 m/s. If container is suddenly stopped then change in temperature of the gas (R = gas constant) is x/(3R). Value of x is ___. The logic circuit shown above is equivalent to : September 26, 2021 [...]