JEE Mains Physics 2002-2019 Solved Video Solutions
A particle moving in the xy plane experiences a velocity dependent force F→ = k(vyi^+vxj^), where vx and vy are the x and y components of its velocity V. If a is the acceleration of the particle, then which of the following statements is true for the particle?
19
Sep
A particle moving in the xy plane experiences a velocity dependent force F→ = k(vyi^+vxj^), where vx and vy are the x and y components of its velocity V. If a is the acceleration of the particle, then which of the following statements is true for the particle? A particle moving in the xy plane [...]
Two planets have masses M and 16M and their radii are a and 2a, respectively. The separation between the centres of the planets is 10a. A body of mass m is fired from the surface of the larger planet towards the smaller planet along the line joining their centres. For the body to be able to reach at the surface of smaller planet, the minimum firing speed needed is
19
Sep
Two planets have masses M and 16M and their radii are a and 2a, respectively. The separation between the centres of the planets is 10a. A body of mass m is fired from the surface of the larger planet towards the smaller planet along the line joining their centres. For the body to be able [...]
For a plane electromagnetic wave, the magnetic field at a point x and time t is B(x,t) = [1.2 x 10^-7 sin (0.5 x 10^3 x + 1.5 x 10^11 t ) ^ k ] T) The instantaneous electric field → E Corresponding to → B is (speed of light C =3 x 10^8 ms-1)
19
Sep
For a plane electromagnetic wave, the magnetic field at a point x and time t is B(x,t) = [1.2 x 10^-7 sin (0.5 x 10^3 x + 1.5 x 10^11 t ) ^ k ] T) The instantaneous electric field → E Corresponding to → B is (speed of light C =3 x 10^8 ms-1) [...]
Three rods of identical cross-section and lengths are made of three different materials of thermal conductivity K1, K2 and K3, respectively. They are joined together at their ends to make a long rod (see figure). One end of the long rod is maintained at 100°C and the other at 0°C (see figure). If the joints of the rod are at 70°C and 20°C in steady state and there is no loss of energy from the surface of the rod, the correct relationship between K1, K2 and K3 is
19
Sep
Three rods of identical cross-section and lengths are made of three different materials of thermal conductivity K1, K2 and K3, respectively. They are joined together at their ends to make a long rod (see figure). One end of the long rod is maintained at 100°C and the other at 0°C (see figure). If the joints [...]
A charged particle going around in a circle can be considered to be a current loop. A particle of mass m carrying charge q is moving in a plane with speed v under the influence of magnetic field B. The magnetic moment of this moving particle :
19
Sep
A charged particle going around in a circle can be considered to be a current loop. A particle of mass m carrying charge q is moving in a plane with speed v under the influence of magnetic field B. The magnetic moment of this moving particle : The correct match between the entries in table [...]
In the above figure shown, the current in the 10 V battery is close to
19
Sep
In the above figure shown, the current in the 10 V battery is close to In the above figure shown the current in the 10 V battery is close to September 19, 2021 Category: JEE Mains Physics 2002-2019 Solved Video Solutions , Practice Set 1 ,
A part of a complete circuit is shown in the figure. At some instant, the value of current I is 1 A and it is decreasing at a rate of 10^2 A s^–1. The value of the potential difference VP – VQ, (in volts) at that instant, is _________.
19
Sep
A part of a complete circuit is shown in the figure. At some instant, the value of current I is 1 A and it is decreasing at a rate of 10^2 A s^–1. The value of the potential difference VP – VQ, (in volts) at that instant, is _________. (in volts) at that instant A [...]
Initially a gas of diatomic molecules is contained in a cylinder of volume V1 at a pressure P1 and temperature 250 K. Assuming that 25% of the molecules get dissociated causing a change in number of moles. The pressure of the resulting gas at temperature 2000 K, when contained in a volume 2V1 is given by P2. The ratio P2/P1 is _________.
19
Sep
Initially a gas of diatomic molecules is contained in a cylinder of volume V1 at a pressure P1 and temperature 250 K. Assuming that 25% of the molecules get dissociated causing a change in number of moles. The pressure of the resulting gas at temperature 2000 K, when contained in a volume 2V1 is given [...]
Suppose that intensity of a laser is ( 315/π) w/m^2. The rms electric field, in units of V/m associated with this source is close to the nearest integer is ______.
19
Sep
Suppose that intensity of a laser is ( 315/π) w/m^2. The rms electric field, in units of V/m associated with this source is close to the nearest integer is ______. in units of V/m associated with this source is close to the nearest integer is ______. Suppose that intensity of a laser is ( 315/π) [...]
Two bodies of the same mass are moving with the same speed, but in different directions in a plane. They have a completely inelastic collision and move together thereafter with a final speed which is half of their initial speed. The angle between the initial velocities of the two bodies (in degree) is _________.
19
Sep
Two bodies of the same mass are moving with the same speed, but in different directions in a plane. They have a completely inelastic collision and move together thereafter with a final speed which is half of their initial speed. The angle between the initial velocities of the two bodies (in degree) is _________. The [...]