JEE Mains Physics 2002-2019 Solved Video Solutions
In a double slit experiment, at a certain point on the screen the path difference between the two interfering waves is (1/8)th of a wavelength. The ratio of the intensity of light at that point to that at the centre of a bright fringe is
23
Sep
In a double slit experiment, at a certain point on the screen the path difference between the two interfering waves is (1/8)th of a wavelength. The ratio of the intensity of light at that point to that at the centre of a bright fringe is In a double slit experiment Which of the following gives [...]
A very long wire ABDMNDC is shown in figure carrying current I. AB and BC parts are straight, long and at right angle. At D wire forms a circular turn DMND of radius R. AB, BC parts are tangential to circular turn at N and D. Magnetic field at the centre of circle is:
23
Sep
A very long wire ABDMNDC is shown in figure carrying current I. AB and BC parts are straight, long and at right angle. At D wire forms a circular turn DMND of radius R. AB, BC parts are tangential to circular turn at N and D. Magnetic field at the centre of circle is: A [...]
A transverse wave travels on a taut steel wire with a velocity of v when tension in it is 2.06 × 10^4 N. When the tension is changed to T, the velocity changed to v/2. The value of T is close to :
23
Sep
A transverse wave travels on a taut steel wire with a velocity of v when tension in it is 2.06 × 10^4 N. When the tension is changed to T, the velocity changed to v/2. The value of T is close to : A transverse wave travels on a taut steel wire with a velocity [...]
A particle moves such that its position vector r(t) = cos ωt i + sin ωt j where ω is a constant and t is time. Then which of the following statements is true for the velocity vector v(t) and acceleration vector a(t) of the particle
23
Sep
A particle moves such that its position vector r(t) = cos ωt i + sin ωt j where ω is a constant and t is time. Then which of the following statements is true for the velocity vector v(t) and acceleration vector a(t) of the particle Which of the following gives a reversible operation? September [...]
A uniform sphere of mass 500 g rolls without slipping on a plane horizontal surface with its centre moving at a speed of 5.00 cm/s. Its kinetic energy is :
23
Sep
A uniform sphere of mass 500 g rolls without slipping on a plane horizontal surface with its centre moving at a speed of 5.00 cm/s. Its kinetic energy is : A uniform sphere of mass 500 g rolls without slipping on a plane horizontal surface with its centre moving at a speed of 5.00 cm/s. [...]
An object is gradually moving away from the focal point of a concave mirror along the axis of the mirror. The graphical representation of the magnitude of linear magnification (m) versus distance of the object from the mirror (x) is correctly given by : (Graphs are drawn schematically and are not to scale)
23
Sep
An object is gradually moving away from the focal point of a concave mirror along the axis of the mirror. The graphical representation of the magnitude of linear magnification (m) versus distance of the object from the mirror (x) is correctly given by : (Graphs are drawn schematically and are not to scale) Which of [...]
A particle of mass m and charge q is released from rest in a uniform electric field. If there is no other force on the particle, the dependence of its speed v on the distance x traveled by it is correctly given by (graphs are schematic and not drawn to scale)
23
Sep
A particle of mass m and charge q is released from rest in a uniform electric field. If there is no other force on the particle, the dependence of its speed v on the distance x traveled by it is correctly given by (graphs are schematic and not drawn to scale) A particle of mass [...]
A plane electromagnetic wave of frequency 25 GHz is propagating in vacuum along the z-direction. At a particular point in space and time, the magnetic field is given by vector B = 5 x 10^-8 j T. The corresponding electric field vector E is (speed of light c = 3 × 10^8 ms–1)
23
Sep
A plane electromagnetic wave of frequency 25 GHz is propagating in vacuum along the z-direction. At a particular point in space and time, the magnetic field is given by vector B = 5 x 10^-8 j T. The corresponding electric field vector E is (speed of light c = 3 × 10^8 ms–1) A plane [...]
As shown in figure, when a spherical cavity (centred at O) of radius 1 is cut out of a uniform sphere of radius R (centred at C), the centre of mass of remaining (shaded) part of sphere is at G, i.e, on the surface of the cavity. R can be determined by the equation :
23
Sep
As shown in figure, when a spherical cavity (centred at O) of radius 1 is cut out of a uniform sphere of radius R (centred at C), the centre of mass of remaining (shaded) part of sphere is at G, i.e, on the surface of the cavity. R can be determined by the equation : [...]
A particle of mass m is dropped from a height h above the ground. At the same time another particle of the same mass is thrown vertically upwards from the ground with a speed of √2gh. If they collide head-on completely inelastically, the time taken for the combined mass to reach the ground, in units of √(h/g) is :
23
Sep
A particle of mass m is dropped from a height h above the ground. At the same time another particle of the same mass is thrown vertically upwards from the ground with a speed of √2gh. If they collide head-on completely inelastically, the time taken for the combined mass to reach the ground, in units [...]