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Two wires of same length and thickness having specific resistances 6Ω cm and 3Ω cm respectively are connected in parallel. The effective resistivity is ρ Ω cm. The value of ρ, to the nearest integer, is……
29
Sep
Two wires of same length and thickness having specific resistances 6Ω cm and 3Ω cm respectively are connected in parallel. The effective resistivity is ρ Ω cm. The value of ρ, to the nearest integer, is…… is to the nearest integer Two wires of same length and thickness having specific resistances 6Ω cm and 3Ω [...]
Consider a 72 cm long wire AB as shown in the figure. The galvanometer jockey is placed at P on AB at a distance x cm from A. The galvanometer shows zero deflection. The value of x, to the nearest integer, is
29
Sep
Consider a 72 cm long wire AB as shown in the figure. The galvanometer jockey is placed at P on AB at a distance x cm from A. The galvanometer shows zero deflection. The value of x, to the nearest integer, is Consider a 72 cm long wire AB as shown in the figure. The [...]
The radius of a sphere is measured to be (7.50 ± 0.85) cm. Suppose the percentage error in its volume is x. The value of x, to the nearest integer, is……..
29
Sep
The radius of a sphere is measured to be (7.50 ± 0.85) cm. Suppose the percentage error in its volume is x. The value of x, to the nearest integer, is…….. is The radius of a sphere is measured to be (7.50 ± 0.85) cm. Suppose the percentage error in its volume is x. The [...]
A ball of mass 4 kg, moving with a velocity of 10 ms^–1, collides with a spring of length 8 m and force constant 100 Nm^–1. The length of the compressed spring is x m. The value of x, to the nearest integer, is……
29
Sep
A ball of mass 4 kg, moving with a velocity of 10 ms^–1, collides with a spring of length 8 m and force constant 100 Nm^–1. The length of the compressed spring is x m. The value of x, to the nearest integer, is…… A ball of mass 4 kg collides with a spring of [...]
The time taken for the magnetic energy to reach 25% of its maximum value, when a solenoid of resistance R, inductance L is connected to a battery, is
29
Sep
The time taken for the magnetic energy to reach 25% of its maximum value, when a solenoid of resistance R, inductance L is connected to a battery, is inductance L is connected to a battery is The time taken for the magnetic energy to reach 25% of its maximum value when a solenoid of resistance [...]
The value of power dissipated across the Zener diode (Vz = 15 V) connected in the circuit as shown in the figure is x × 10^–1 watt. The value of x, to the nearest integer, is ………
28
Sep
The value of power dissipated across the Zener diode (Vz = 15 V) connected in the circuit as shown in the figure is x × 10^–1 watt. The value of x, to the nearest integer, is ……… is The value of power dissipated across the Zener diode (Vz = 15 V) connected in the circuit [...]
The first three spectral lines of H-atom in the Balmer series are given λ1 , λ2 , λ3 considering the Bohr atomic model, the wave lengths of first and third spectral lines (λ1/λ2) are related by a factor of approximately ‘x’ × 10^–1. The value of x, to the nearest integer, is …………
28
Sep
The first three spectral lines of H-atom in the Balmer series are given λ1 , λ2 , λ3 considering the Bohr atomic model, the wave lengths of first and third spectral lines (λ1/λ2) are related by a factor of approximately ‘x’ × 10^–1. The value of x, to the nearest integer, is ………… is The [...]
A particle moving with kinetic energy E has de Broglie wavelength λ. If energy ΔE is added to its energy, the wavelength become λ/2. Value of ΔE, is :
23
Sep
A particle moving with kinetic energy E has de Broglie wavelength λ. If energy ΔE is added to its energy, the wavelength become λ/2. Value of ΔE, is : A particle moving with kinetic energy E has de Broglie wavelength λ. If energy ΔE is added to its energy is the wavelength become λ/2. Value [...]
The dimension of B^2/2µ0, where B is magnetic field and µ0 is the magnetic permeability of vacuum, is:
23
Sep
The dimension of B^2/2µ0, where B is magnetic field and µ0 is the magnetic permeability of vacuum, is: is The dimension of B^2/2µ0 where B is magnetic field and µ0 is the magnetic permeability of vacuum September 23, 2021 Category: JEE Mains Physics 2002-2019 Solved Video Solutions , Practice Set 1 ,
The radius of gyration of a uniform rod of length l, about an axis passing through a point l/4 away from the centre of the rod, and perpendicular to it, is :
19
Sep
The radius of gyration of a uniform rod of length l, about an axis passing through a point l/4 away from the centre of the rod, and perpendicular to it, is : about an axis passing through a point l/4 away from the centre of the rod and perpendicular to it is The radius of [...]