JEE Mains Physics 2002-2019 Solved Video Solutions
A series LCR circuit is designed to resonate at an angular frequency ω0 = 10^5 rad/s. The circuit draws 16 W power from 120 V source at resonance. The value of resistance ‘R’ in the circuit is …. Ω
26
Sep
A series LCR circuit is designed to resonate at an angular frequency ω0 = 10^5 rad/s. The circuit draws 16 W power from 120 V source at resonance. The value of resistance ‘R’ in the circuit is …. Ω A series LCR circuit is designed to resonate at an angular frequency ω0 = 10^5 rad/s. [...]
A signal of 0.1 kW is transmitted in a cable. The attenuation of cable is –5 dB per km and cable length is 20 km. The power received at receiver is 10^–x W. The value of x is …… [Gain in dB = 10 log10 (P0/Pi)]
26
Sep
A signal of 0.1 kW is transmitted in a cable. The attenuation of cable is –5 dB per km and cable length is 20 km. The power received at receiver is 10^–x W. The value of x is …… [Gain in dB = 10 log10 (P0/Pi)] The logic circuit shown above is equivalent to : [...]
A point charge of +12 μC is at a distance 6 cm vertically above the centre of a square of side 12 cm as shown in figure. The magnitude of the electric flux through the square will be ….. x 10^3 Nm^2/C .
26
Sep
A point charge of +12 μC is at a distance 6 cm vertically above the centre of a square of side 12 cm as shown in figure. The magnitude of the electric flux through the square will be ….. x 10^3 Nm^2/C . The logic circuit shown above is equivalent to : September 26, 2021 [...]
The root mean square speed of molecules of a given mass of a gas at 27°C and 1 atmosphere pressure is 200 ms^–1. The root mean square speed of molecules of the gas at 127°C and 2 atmosphere pressure is x /√ 3 ms^-1. The value of x will be …….
26
Sep
The root mean square speed of molecules of a given mass of a gas at 27°C and 1 atmosphere pressure is 200 ms^–1. The root mean square speed of molecules of the gas at 127°C and 2 atmosphere pressure is x /√ 3 ms^-1. The value of x will be ……. The logic circuit shown [...]
Two solids A and B of mass 1 kg and 2 kg respectively are moving with equal linear momentum. The ratio of their kinetic energies (K.E.)A : (K.E.)B will be A/1, so the value of A will be …
26
Sep
Two solids A and B of mass 1 kg and 2 kg respectively are moving with equal linear momentum. The ratio of their kinetic energies (K.E.)A : (K.E.)B will be A/1, so the value of A will be … so the value of A will be ... Two solids A and B of mass 1 [...]
A cylindrical wire of radius 0.5 mm and conductivity 5 × 10^7 S/m is subjected to an electric field of 10 mV/m. The expected value of current in the wire will be x^3p mA. The value of x is …….
26
Sep
A cylindrical wire of radius 0.5 mm and conductivity 5 × 10^7 S/m is subjected to an electric field of 10 mV/m. The expected value of current in the wire will be x^3p mA. The value of x is ……. A cylindrical wire of radius 0.5 mm and conductivity 5 × 10^7 S/m is subjected [...]
A uniform thin bar of mass 6 kg and length 2.4 meter is bent to make an equilateral hexagon. The moment of inertia about an axis passing through the centre of mass and perpendicular to the plane of hexagon is …… × 10^–1 kg m^2
26
Sep
A uniform thin bar of mass 6 kg and length 2.4 meter is bent to make an equilateral hexagon. The moment of inertia about an axis passing through the centre of mass and perpendicular to the plane of hexagon is …… × 10^–1 kg m^2 The logic circuit shown above is equivalent to : September [...]
A uniform metallic wire is elongated by 0.04 m when subjected to a linear force F. The elongation, if its length and diameter is doubled and subjected to the same force will be …….. cm.
26
Sep
A uniform metallic wire is elongated by 0.04 m when subjected to a linear force F. The elongation, if its length and diameter is doubled and subjected to the same force will be …….. cm. A uniform metallic wire is elongated by 0.04 m when subjected to a linear force F. The elongation if its [...]
A body weighs 49 N on a spring balance at the north pole. What will be its weight recorded on the same weighing machine, if it is shifted to the equator ? (Use g = GM/R^2 9.8 ms^–2 and radius of earth, R = 6400 km.]
26
Sep
A body weighs 49 N on a spring balance at the north pole. What will be its weight recorded on the same weighing machine, if it is shifted to the equator ? (Use g = GM/R^2 9.8 ms^–2 and radius of earth, R = 6400 km.] A body weighs 49 N on a spring balance [...]
A particle is projected with velocity v0 along x-axis. A damping force is acting on the particle which is proportional to the square of the distance from the origin i.e., ma = –ax^2. The distance at which the particle stops :
26
Sep
A particle is projected with velocity v0 along x-axis. A damping force is acting on the particle which is proportional to the square of the distance from the origin i.e., ma = –ax^2. The distance at which the particle stops : A particle is projected with velocity v0 along x-axis. A damping force is acting [...]