Practice Set 1
The coordinates of centre of mass of a uniform flag shaped lamina (thin flat plate) of mass 4kg. (The coordinates of the same are shown in figure) are :
23
Sep
The coordinates of centre of mass of a uniform flag shaped lamina (thin flat plate) of mass 4kg. (The coordinates of the same are shown in figure) are : The coordinates of centre of mass of a uniform flag shaped lamina (thin flat plate) of mass 4kg. (The coordinates of the same are shown in [...]
The graph which depicts the results of Rutherford gold foil experiment with α-particles is : θ : Scattering angle Y : Number of scattered α-particles detected (Plots are schematic and not to scale)
23
Sep
The graph which depicts the results of Rutherford gold foil experiment with α-particles is : θ : Scattering angle Y : Number of scattered α-particles detected (Plots are schematic and not to scale) The graph which depicts the results of Rutherford gold foil experiment with α-particles is : θ : Scattering angle Y : Number [...]
The length of a potentiometer wire is 1200 cm and it carries a current of 60 mA. For a cell of emf 5V and internal resistance of 20 Ω, the null point on it is found to be a 1000cm. The resistance of whole wire is :
23
Sep
The length of a potentiometer wire is 1200 cm and it carries a current of 60 mA. For a cell of emf 5V and internal resistance of 20 Ω, the null point on it is found to be a 1000cm. The resistance of whole wire is : The length of a potentiometer wire is 1200 [...]
The critical angle of a medium for a specific wavelength, if the medium has relative permittivity 3 and relative permeability 4/3 for this wavelength, will be :
23
Sep
The critical angle of a medium for a specific wavelength, if the medium has relative permittivity 3 and relative permeability 4/3 for this wavelength, will be : if the medium has relative permittivity 3 and relative permeability 4/3 for this wavelength The critical angle of a medium for a specific wavelength will be September 23, [...]
Boolean relation at the output stage-Y for the following circuit is :
23
Sep
Boolean relation at the output stage-Y for the following circuit is : Boolean relation at the output stage-Y for the following circuit is : September 23, 2021 Category: JEE Mains Physics 2002-2019 Solved Video Solutions , Practice Set 1 ,
Consider a uniform rod of mass M = 4m and length l pivoted about its centre. A mass m moving with velocity v making angle θ = π/4 to the rod’s long axis collides with one end of the rod and sticks to it. The angular speed of the rod-mass system just after the collision is
23
Sep
Consider a uniform rod of mass M = 4m and length l pivoted about its centre. A mass m moving with velocity v making angle θ = π/4 to the rod’s long axis collides with one end of the rod and sticks to it. The angular speed of the rod-mass system just after the collision [...]
Photon with kinetic energy of 1MeV moves from south to north. It gets an acceleration of 10^12 m/s^2 by an applied magnetic field (west to east). The value of magnetic field : (Rest mass of proton is 1.6 × 10^–27 kg) :
23
Sep
Photon with kinetic energy of 1MeV moves from south to north. It gets an acceleration of 10^12 m/s^2 by an applied magnetic field (west to east). The value of magnetic field : (Rest mass of proton is 1.6 × 10^–27 kg) : Which of the following gives a reversible operation? September 23, 2021 Category: JEE [...]
Effective capacitance of parallel combination of two capacitors C1 and C2 is 10 µF. When these capacitors are individually connected to a voltage source of 1V, the energy stored in the capacitor C2 is 4 times that of C1. If these capacitors are connected in series, then their effective capacitance will be :
23
Sep
Effective capacitance of parallel combination of two capacitors C1 and C2 is 10 µF. When these capacitors are individually connected to a voltage source of 1V, the energy stored in the capacitor C2 is 4 times that of C1. If these capacitors are connected in series, then their effective capacitance will be : Effective capacitance [...]
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Effective capacitance of parallel combination of two capacitors C1 and C2 is 10 µF. When these capacitors are individually connected to a voltage source of 1V ,
the energy stored in the capacitor C2 is 4 times that of C1. If these capacitors are connected in series ,
then their effective capacitance will be : ,
When photon of energy 4.0 eV strikes the surface of a metal A, the ejected photoelectrons have maximum kinetic energy TA eV end de-Broglie wavelength λA. The maximum kinetic energy of photoelectrons liberated from another metal B by photon of energy 4.50 eV is TB = (TA – 1.5) eV. If the de-Broglie wavelength of these photoelectrons λB = 2λA, then the work function of metal B is
23
Sep
When photon of energy 4.0 eV strikes the surface of a metal A, the ejected photoelectrons have maximum kinetic energy TA eV end de-Broglie wavelength λA. The maximum kinetic energy of photoelectrons liberated from another metal B by photon of energy 4.50 eV is TB = (TA – 1.5) eV. If the de-Broglie wavelength of [...]
The dimension of stopping potential V0 in photoelectric effect in units of Planck’s constant ‘h’, speed of light ‘c’ and Gravitational constant ‘G’ and ampere A is :
23
Sep
The dimension of stopping potential V0 in photoelectric effect in units of Planck’s constant ‘h’, speed of light ‘c’ and Gravitational constant ‘G’ and ampere A is : speed of light 'c' and Gravitational constant 'G' and ampere A is : The dimension of stopping potential V0 in photoelectric effect in units of Planck's constant [...]