JEE Mains Physics 2002-2019 Solved Video Solutions
A current of 10 A exists in a wire of cross sectional area of 5 mm^2 with a drift velocity of 2 × 10^–3 ms^–1. The number of free electrons in each cubic meter of the wire is……..
28
Sep
A current of 10 A exists in a wire of cross sectional area of 5 mm^2 with a drift velocity of 2 × 10^–3 ms^–1. The number of free electrons in each cubic meter of the wire is…….. A current of 10 A exists in a wire of cross sectional area of 5 mm^2 with [...]
Which level of the single ionized carbon has the same energy as the ground state energy of hydrogen atom?
28
Sep
Which level of the single ionized carbon has the same energy as the ground state energy of hydrogen atom? Which level of the single ionized carbon has the same energy as the ground state energy of hydrogen atom? September 28, 2021 Category: JEE Mains Physics 2002-2019 Solved Video Solutions , Practice Set 1 ,
A boy is rolling a 0.5 kg ball on the frictionless floor with the speed of 20 ms^–1. The ball gets deflected by an obstacle on the way. After deflection it moves with 5% of its initial kinetic energy. What is the speed of the ball now ?
28
Sep
A boy is rolling a 0.5 kg ball on the frictionless floor with the speed of 20 ms^–1. The ball gets deflected by an obstacle on the way. After deflection it moves with 5% of its initial kinetic energy. What is the speed of the ball now ? Red light differs from blue light as [...]
A Carnot’s engine working between 400 K and 800 K has a work output of 1200 J per cycle. The amount of heat energy supplied to the engine from the source in each cycle is :
28
Sep
A Carnot’s engine working between 400 K and 800 K has a work output of 1200 J per cycle. The amount of heat energy supplied to the engine from the source in each cycle is : A Carnot's engine working between 400 K and 800 K has a work output of 1200 J per cycle. [...]
The output of the given combination gates represents :
28
Sep
The output of the given combination gates represents : The output of the given combination gates represents : September 28, 2021 Category: JEE Mains Physics 2002-2019 Solved Video Solutions , Practice Set 1 ,
For what value of displacement the kinetic energy and potential energy of a simple harmonic oscillation become equal ?
28
Sep
For what value of displacement the kinetic energy and potential energy of a simple harmonic oscillation become equal ? For what value of displacement the kinetic energy and potential energy of a simple harmonic oscillation become equal ? September 28, 2021 Category: JEE Mains Physics 2002-2019 Solved Video Solutions , Practice Set 1 ,
A solenoid of 1000 turns per metre has a core with relative permeability 500. Insulated windings of the solenoid carry an electric current of 5A. The magnetic flux density produced by the solenoid is : (permeability of free space = 4π × 10^–7 H/m)
28
Sep
A solenoid of 1000 turns per metre has a core with relative permeability 500. Insulated windings of the solenoid carry an electric current of 5A. The magnetic flux density produced by the solenoid is : (permeability of free space = 4π × 10^–7 H/m) Red light differs from blue light as they have: September 28, [...]
A car accelerates from rest at a constant rate for some time after which it decelerates at a constant rate to come to rest. If the total time elapsed is t seconds, the total distance travelled is :
28
Sep
A car accelerates from rest at a constant rate for some time after which it decelerates at a constant rate to come to rest. If the total time elapsed is t seconds, the total distance travelled is : A car accelerates from rest at a constant rate for some time after which it decelerates at [...]
The vernier scale used for measurement has a positive zero error of 0.2 mm. If while taking a measurement it was noted that ‘0’ on the vernier scale lies between 8.5 cm and 8.6 cm, vernier coincidence is 6, then the correct value of measurement is……. cm. (least count = 0.01 cm)
28
Sep
The vernier scale used for measurement has a positive zero error of 0.2 mm. If while taking a measurement it was noted that ‘0’ on the vernier scale lies between 8.5 cm and 8.6 cm, vernier coincidence is 6, then the correct value of measurement is……. cm. (least count = 0.01 cm) The vernier scale [...]
Two identical metal wires of thermal conductivities K1 and K2 respectively are connected in series. The effective thermal conductivity of the combination is :
28
Sep
Two identical metal wires of thermal conductivities K1 and K2 respectively are connected in series. The effective thermal conductivity of the combination is : Two identical metal wires of thermal conductivities K1 and K2 respectively are connected in series. The effective thermal conductivity of the combination is : September 28, 2021 Category: JEE Mains Physics [...]