Practice Set 1
A circular coil of radius 10 cm is placed in a uniform magnetic field of 3.0 × 10^–5 T with its plane perpendicular to the field initially. It is rotated at constant angular speed about an axis along the diameter of coil and perpendicular to magnetic field so that it undergoes half of rotation in 0.2 s. The maximum value of EMF induced (in μV) in the coil will be close to the integer …..
16
Sep
A circular coil of radius 10 cm is placed in a uniform magnetic field of 3.0 × 10^–5 T with its plane perpendicular to the field initially. It is rotated at constant angular speed about an axis along the diameter of coil and perpendicular to magnetic field so that it undergoes half of rotation in [...]
A small block starts slipping down from a point B on an inclined plane AB, which is making an angle θ with the horizontal section BC is smooth and the remaining section CA is rough with a coefficient of friction μ . It is found that the block comes to rest as it reaches the bottom (point A) of the inclined plane. If BC = 2AC, the coefficient of friction is given by μ = k tanθ. The value of k is ……
16
Sep
A small block starts slipping down from a point B on an inclined plane AB, which is making an angle θ with the horizontal section BC is smooth and the remaining section CA is rough with a coefficient of friction μ . It is found that the block comes to rest as it reaches the [...]
When radiation of wavelength λ is used to illuminate a metallic surface, the stopping potential is V. When the same surface is illuminated with radiation of wavelength 3λ, the stopping potential is V/4 . If the threshold wavelength for the metallic surface is n lamba then value of n will be ……….
16
Sep
When radiation of wavelength λ is used to illuminate a metallic surface, the stopping potential is V. When the same surface is illuminated with radiation of wavelength 3λ, the stopping potential is V/4 . If the threshold wavelength for the metallic surface is n lamba then value of n will be ………. the stopping potential [...]
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the stopping potential is V. When the same surface is illuminated with radiation of wavelength 3λ ,
the stopping potential is V/4 . If the threshold wavelength for the metallic surface is n lamba then value of n will be .......... ,
When radiation of wavelength λ is used to illuminate a metallic surface ,
An engine takes in 5 moles of air at 20°C and 1 atm, and compresses it adiabatically to 1/10th of the original volume. Assuming air to be a diatomic ideal gas made up of rigid molecules, the change in its internal energy during this process comes out to be X kJ. The value of X to the nearest integer is ……
16
Sep
An engine takes in 5 moles of air at 20°C and 1 atm, and compresses it adiabatically to 1/10th of the original volume. Assuming air to be a diatomic ideal gas made up of rigid molecules, the change in its internal energy during this process comes out to be X kJ. The value of X [...]
Tags:
An engine takes in 5 moles of air at 20°C and 1 atm ,
and compresses it adiabatically to 1/10th of the original volume. Assuming air to be a diatomic ideal gas made up of rigid molecules ,
the change in its internal energy during this process comes out to be X kJ. The value of X to the nearest integer is ...... ,
A bead of mass m stays at point P(a, b) on a wire bent in the shape of a parabola y = 4Cx^2 and rotating with angular speed ω (see figure). The value of ω is (neglect friction)
16
Sep
A bead of mass m stays at point P(a, b) on a wire bent in the shape of a parabola y = 4Cx^2 and rotating with angular speed ω (see figure). The value of ω is (neglect friction) A bead of mass m stays at point P(a b) on a wire bent in the shape [...]
A particle of mass m with an initial velocity ui^ collides perfectly elastically with a mass 3 m at rest. It moves with a velocity v j^ after collision, then, v is given by
16
Sep
A particle of mass m with an initial velocity ui^ collides perfectly elastically with a mass 3 m at rest. It moves with a velocity v j^ after collision, then, v is given by A particle of mass m with an initial velocity ui^ collides perfectly elastically with a mass 3 m at rest. It [...]
If speed V, area A and force F are chosen as fundamental units, then the dimension of Young’s modulus will be
16
Sep
If speed V, area A and force F are chosen as fundamental units, then the dimension of Young’s modulus will be area A and force F are chosen as fundamental units If speed (V) then the dimension of Young’s modulus will be September 16, 2021 Category: JEE Mains Physics 2002-2019 Solved Video Solutions , Practice [...]
A cylindrical vessel containing a liquid is rotated about its axis so that the liquid rises at its sides as shown in the figure. The radius of vessel is 5 cm and the angular speed of rotation is ω rad s–1. The difference in the height, h (in cm) of liquid at the centre of vessel and at the side will be
16
Sep
A cylindrical vessel containing a liquid is rotated about its axis so that the liquid rises at its sides as shown in the figure. The radius of vessel is 5 cm and the angular speed of rotation is ω rad s–1. The difference in the height, h (in cm) of liquid at the centre of [...]
Two identical strings X and Z made of same material have tension TX and TZ in them. If their fundamental frequencies are 450 Hz and 300 Hz, respectively, then the ratio TX/TZ is
16
Sep
Two identical strings X and Z made of same material have tension TX and TZ in them. If their fundamental frequencies are 450 Hz and 300 Hz, respectively, then the ratio TX/TZ is respectively then the ratio TX/TZ is Two identical strings X and Z made of same material have tension TX and TZ in [...]
The mass density of a spherical galaxy varies as k/r over a large distance ‘r’ from its centre. In that region, a small star is in a circular orbit of radius R. Then the period of revolution, T depends on R as
16
Sep
The mass density of a spherical galaxy varies as k/r over a large distance ‘r’ from its centre. In that region, a small star is in a circular orbit of radius R. Then the period of revolution, T depends on R as a small star is in a circular orbit of radius R. Then the [...]