JEE Mains Physics 2002-2019 Solved Video Solutions
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 [...]
Three rays of light, namely red (R), green (G) and blue (B) are incident on the face PQ of a right angled prism PQR as shown in figure. The refractive indices of the material of the prism for red, green and blue wavelength are 1.27, 1.42 and 1.49 respectively. The colour of the ray(s) emerging out of the face PR is :
29
Sep
Three rays of light, namely red (R), green (G) and blue (B) are incident on the face PQ of a right angled prism PQR as shown in figure. The refractive indices of the material of the prism for red, green and blue wavelength are 1.27, 1.42 and 1.49 respectively. The colour of the ray(s) emerging [...]
Tags:
1.42 and 1.49 respectively. The colour of the ray(s) emerging out of the face PR is : ,
green (G) and blue (B) are incident on the face PQ of a right angled prism PQR as shown in figure. The refractive indices of the material of the prism for red ,
green and blue wavelength are 1.27 ,
namely red (R) ,
Three rays of light ,
If the angular velocity of earth’s spin is increased such that the bodies at the equator start floating, the duration of the day would be approximately : (Take : g = 10 ms^–2, the radius of earth, R = 6400 × 10^3 m, Take π = 3.14)
29
Sep
If the angular velocity of earth’s spin is increased such that the bodies at the equator start floating, the duration of the day would be approximately : (Take : g = 10 ms^–2, the radius of earth, R = 6400 × 10^3 m, Take π = 3.14) If the angular velocity of earth's spin is [...]
The decay of a portion to neutron is:
29
Sep
The decay of a portion to neutron is: The decay of a portion to neutron is: September 29, 2021 Category: JEE Mains Physics 2002-2019 Solved Video Solutions , Practice Set 1 ,
In a series LCR circuit, the inductive reactance (XL) is 10 Ω and the capacitive reactance (XC) is 4 Ω. The resistance (R) in the circuit is 6 Ω. The power factor of the circuit is :
29
Sep
In a series LCR circuit, the inductive reactance (XL) is 10 Ω and the capacitive reactance (XC) is 4 Ω. The resistance (R) in the circuit is 6 Ω. The power factor of the circuit is : In a series LCR circuit the inductive reactance (XL) is 10 Ω and the capacitive reactance (XC) is [...]
The correct relationship between alpha (ratio of collector current to emitter current) and β (ratio of collector current to base current) of a transistor is:
29
Sep
The correct relationship between alpha (ratio of collector current to emitter current) and β (ratio of collector current to base current) of a transistor is: The correct relationship between alpha (ratio of collector current to emitter current) and β (ratio of collector current to base current) of a transistor is: September 29, 2021 Category: JEE [...]
The velocity-displacement graph of a particle is shown in the figure. The acceleration-displacement graph of the same particle is represented by :
29
Sep
The velocity-displacement graph of a particle is shown in the figure. The acceleration-displacement graph of the same particle is represented by : The velocity-displacement graph of a particle is shown in the figure. The acceleration-displacement graph of the same particle is represented by : September 29, 2021 Category: JEE Mains Physics 2002-2019 Solved Video Solutions [...]
Consider a uniform wire of mass M and length L. It is bent into a semicircle. Its moment of inertia about a line perpendicular to the plane of the wire passing through the centre is :
29
Sep
Consider a uniform wire of mass M and length L. It is bent into a semicircle. Its moment of inertia about a line perpendicular to the plane of the wire passing through the centre is : Consider a uniform wire of mass M and length L. It is bent into a semicircle. Its moment of [...]
A plane electromagnetic wave propagating along y-direction can have the following pair of electric field (E→) and magnetic field (B→) components.
29
Sep
A plane electromagnetic wave propagating along y-direction can have the following pair of electric field (E→) and magnetic field (B→) components. A plane electromagnetic wave propagating along y-direction can have the following pair of electric field (E→) and magnetic field (B→) components. September 29, 2021 Category: JEE Mains Physics 2002-2019 Solved Video Solutions , Practice [...]
A proton and an α-particle, having kinetic energies Kp and Kα, respectively, enter into a magnetic field at right angles. The ratio of the radii of trajectory of proton to that of α-particle is 2 : 1. The ratio of Kp : Kα is :
29
Sep
A proton and an α-particle, having kinetic energies Kp and Kα, respectively, enter into a magnetic field at right angles. The ratio of the radii of trajectory of proton to that of α-particle is 2 : 1. The ratio of Kp : Kα is : A proton and an α-particle enter into a magnetic field [...]