JEE Mains Physics 2002-2019 Solved Video Solutions
A container is divided into two chambers by a partition. The volume of first chamber is 4.5 litre and second chamber is 5.5 litre. The first chamber contain 3.0 moles of gas at pressure 2.0 atm and second chamber contain 4.0 moles of gas at pressure 3.0 atm. After the partition is removed and the mixture attains equilibrium, then, the common equilibrium pressure existing in the mixture is x × 10^–1 atm. Value of x is…. .
26
Sep
A container is divided into two chambers by a partition. The volume of first chamber is 4.5 litre and second chamber is 5.5 litre. The first chamber contain 3.0 moles of gas at pressure 2.0 atm and second chamber contain 4.0 moles of gas at pressure 3.0 atm. After the partition is removed and the [...]
The mass per unit length of a uniform wire is 0.135 g/cm. A transverse wave of the form y = – 0.21 sin (x + 30t) is produced in it, where x is in meter and t is in second. Then, the expected value of tension in the wire is x × 10^–2 N. Value of x is . (Round-off to the nearest integer)
26
Sep
The mass per unit length of a uniform wire is 0.135 g/cm. A transverse wave of the form y = – 0.21 sin (x + 30t) is produced in it, where x is in meter and t is in second. Then, the expected value of tension in the wire is x × 10^–2 N. Value [...]
As shown in the figure, a block of mass √3 kg is kept on a horizontal rough surface of coefficient of friction 1/3√3. The critical force to be applied on the vertical surface as shown at an angle 60° with horizontal such that it does not move, will be 3x. The value of x will be
26
Sep
As shown in the figure, a block of mass √3 kg is kept on a horizontal rough surface of coefficient of friction 1/3√3. The critical force to be applied on the vertical surface as shown at an angle 60° with horizontal such that it does not move, will be 3x. The value of x will [...]
A boy pushes a box of mass 2 kg with a force F→ = (20i^ + 10j^) N on a frictionless surface. If the box was initially at rest, then ______ m is displacement along the x-axis after 10 s.
26
Sep
A boy pushes a box of mass 2 kg with a force F→ = (20i^ + 10j^) N on a frictionless surface. If the box was initially at rest, then ______ m is displacement along the x-axis after 10 s. A boy pushes a box of mass 2 kg with a force F→ = (20i^ [...]
The circuit contains two diodes each with a forward resistance of 50 Ω and with infinite reverse resistance. If the battery voltage is 6 V, the current through the 120 Ω resistance is_ mA.
26
Sep
The circuit contains two diodes each with a forward resistance of 50 Ω and with infinite reverse resistance. If the battery voltage is 6 V, the current through the 120 Ω resistance is_ mA. The circuit contains two diodes each with a forward resistance of 50 Ω and with infinite reverse resistance. If the battery [...]
In an electrical circuit, a battery is connected to pass 20 C of charge through it in a certain given time. The potential difference between two plates of the battery is maintained at 15 V. The work done by the battery is ______J.
26
Sep
In an electrical circuit, a battery is connected to pass 20 C of charge through it in a certain given time. The potential difference between two plates of the battery is maintained at 15 V. The work done by the battery is ______J. In an electrical circuit The logic circuit shown above is equivalent to [...]
A person standing on a spring balance inside a stationary lift measures 60 kg. The weight of that person if the lift descends with uniform downward acceleration of 1.8 m/s^2 will be N. [g = 10 m/s^2]
26
Sep
A person standing on a spring balance inside a stationary lift measures 60 kg. The weight of that person if the lift descends with uniform downward acceleration of 1.8 m/s^2 will be N. [g = 10 m/s^2] A person standing on a spring balance inside a stationary lift measures 60 kg. The weight of that [...]
Five equal resistances are connected in a network as shown in figure. The net resistance between the points A and B is :
26
Sep
Five equal resistances are connected in a network as shown in figure. The net resistance between the points A and B is : Five equal resistances are connected in a network as shown in figure. The net resistance between the points A and B is : September 26, 2021 Category: JEE Mains Physics 2002-2019 Solved [...]
A large number of water drops each of radius r combine to have a drop of radius R. If the surface tension is T and the mechanical equivalent at heat is J, the rise in heat energy per unit volume will be
26
Sep
A large number of water drops each of radius r combine to have a drop of radius R. If the surface tension is T and the mechanical equivalent at heat is J, the rise in heat energy per unit volume will be A large number of water drops each of radius r combine to have [...]
LED is constructed from Ga-As-P semiconducting material. The energy gap of this LED is 1.9 eV. Calculate the wavelength of light emitted and its colour. [h = 6.63 × 10^–34 Js and c = 3 × 10^8 ms^–1]
26
Sep
LED is constructed from Ga-As-P semiconducting material. The energy gap of this LED is 1.9 eV. Calculate the wavelength of light emitted and its colour. [h = 6.63 × 10^–34 Js and c = 3 × 10^8 ms^–1] LED is constructed from Ga-As-P semiconducting material. The energy gap of this LED is 1.9 eV. Calculate [...]