Practice Set 1
A body A of mass m is moving in a circular orbit of radius R about a planet. Another body B of mass m/2 collides with A with a velocity which is half (vector v/2) the instantaneous velocity vector v of A. The collision is completely inelastic. Then, the combined body :
23
Sep
A body A of mass m is moving in a circular orbit of radius R about a planet. Another body B of mass m/2 collides with A with a velocity which is half (vector v/2) the instantaneous velocity vector v of A. The collision is completely inelastic. Then, the combined body : Which of the [...]
If the screw on a screw-gauge is given six rotations, it moves by 3 mm on the main scale. If there are 50 divisions on the circular scale the least count of the screw gauge is :
23
Sep
If the screw on a screw-gauge is given six rotations, it moves by 3 mm on the main scale. If there are 50 divisions on the circular scale the least count of the screw gauge is : If the screw on a screw-gauge is given six rotations it moves by 3 mm on the main [...]
A quantity f is given by f = √(hc5/G) where c is speed of light, G universal gravitational constant and h is the Planck’s constant. Dimension of f is that of :
23
Sep
A quantity f is given by f = √(hc5/G) where c is speed of light, G universal gravitational constant and h is the Planck’s constant. Dimension of f is that of : A quantity f is given by f = √(hc5/G) where c is speed of light G universal gravitational constant and h is the [...]
A long, straight wire of radius a carries a current distributed uniformly over its cross-section. The ratio of the magnetic fields due to the wire at distance a/3 and 2a, respectively from the axis of the wire is :
23
Sep
A long, straight wire of radius a carries a current distributed uniformly over its cross-section. The ratio of the magnetic fields due to the wire at distance a/3 and 2a, respectively from the axis of the wire is : A long respectively from the axis of the wire is : straight wire of radius a [...]
Consider a force vector F = -xi + yj. The work done by this force in moving a particle from point A(1, 0) to B(0, 1) along the line segment is : (all quantities are in SI units)
23
Sep
Consider a force vector F = -xi + yj. The work done by this force in moving a particle from point A(1, 0) to B(0, 1) along the line segment is : (all quantities are in SI units) 0) to B(0 1) along the line segment is : (all quantities are in SI units) Consider [...]
In the given circuit diagram, a wire is joining points B and D. The current in this wire is
23
Sep
In the given circuit diagram, a wire is joining points B and D. The current in this wire is a wire is joining points B and D. The current in this wire is In the given circuit diagram September 23, 2021 Category: JEE Mains Physics 2002-2019 Solved Video Solutions , Practice Set 1 ,
The electric fields of two plane electromagnetic plane waves in vacuum are given by vector E1 = E0j cos(ωt – kx) and vector E2 = E0k cos(ωt – ky) At t = 0, a particle of charge q is at origin with a velocity v = 0.8cj (c is the speed of light in vacuum). The instantaneous force experienced by the particle is :
23
Sep
The electric fields of two plane electromagnetic plane waves in vacuum are given by vector E1 = E0j cos(ωt – kx) and vector E2 = E0k cos(ωt – ky) At t = 0, a particle of charge q is at origin with a velocity v = 0.8cj (c is the speed of light in vacuum). [...]
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a particle of charge q is at origin with a velocity v = 0.8cj (c is the speed of light in vacuum). The instantaneous force experienced by the particle is : ,
The electric fields of two plane electromagnetic plane waves in vacuum are given by vector E1 = E0j cos(ωt - kx) and vector E2 = E0k cos(ωt - ky) At t = 0 ,
Which of the following is an equivalent cyclic process corresponding to the thermodynamic cyclic given in the figure ? where, 1 → 2 is adiabatic. (Graphs are schematic and are not to scale)
23
Sep
Which of the following is an equivalent cyclic process corresponding to the thermodynamic cyclic given in the figure ? where, 1 → 2 is adiabatic. (Graphs are schematic and are not to scale) 1 → 2 is adiabatic. (Graphs are schematic and are not to scale) Which of the following is an equivalent cyclic process [...]
Water flows in a horizontal tube (see figure). The pressure of water changes by 700 Nm^–2 between A and B where the area of cross section are 40 cm^2 and 20 cm^2, respectively. Find the rate of flow of water through the tube. (density of water = 1000 kgm^–3)
23
Sep
Water flows in a horizontal tube (see figure). The pressure of water changes by 700 Nm^–2 between A and B where the area of cross section are 40 cm^2 and 20 cm^2, respectively. Find the rate of flow of water through the tube. (density of water = 1000 kgm^–3) respectively. Find the rate of flow [...]
The aperture diameter of a telescope is 5m. The separation between the moon and the earth is 4 × 10^5 km. With light of wavelength of 5500 Å, the minimum separation between objects on the surface of moon, so that they are just resolved, is close to
23
Sep
The aperture diameter of a telescope is 5m. The separation between the moon and the earth is 4 × 10^5 km. With light of wavelength of 5500 Å, the minimum separation between objects on the surface of moon, so that they are just resolved, is close to is close to so that they are just [...]