A body is moving in a low circular orbit about a planet of mass M and radius R.
A body is moving in a low circular orbit about a planet of mass M and radius R. The radius... View Article
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A paramagnetic sample shows a net magnetisation of 6 A/m
A paramagnetic sample shows a net magnetisation of 6 A/m when it is placed in an external magnetic field of... View Article
A cube of metal is subjected to a hydrostatic pressure of 4 GPa.
A cube of metal is subjected to a hydrostatic pressure of 4 GPa. The percentage change in the length of... View Article
The electric field of a plane electromagnetic wave is given by
The electric field of a plane electromagnetic wave is given by \(\begin{array}{l}\vec{E}=E_{0}(\hat{x}+\hat{y})sin(kz-\omega t)\end{array} \). Its magnetic field will be given... View Article
A series L-R circuit is connected to a battery of emf V.
A series L-R circuit is connected to a battery of emf V. If the circuit is switched on at t... View Article
Consider two uniform discs of the same thickness and different radii R1= R
Consider two uniform discs of the same thickness and different radii R1= R and R2 =αR made of the same... View Article
A small ball of mass m is thrown upward with velocity u from the ground.
A small ball of mass m is thrown upward with velocity u from the ground. The ball experiences a resistive... View Article
The driver of a bus approaching a big wall notices that
The driver of a bus approaching a big wall notices that the frequency of his bus’s horn changes from 420... View Article
Match the thermodynamic processes taking place in a system with the correct conditions.
Match the thermodynamic processes taking place in a system with the correct conditions. In the table: ∆Q is the heat... View Article
A person pushes a box on a rough horizontal platform surface.
A person pushes a box on a rough horizontal platform surface. He applies a force of 200 N over a... View Article
A circular coil has moment of inertia 0.8 kg
A circular coil has moment of inertia 0.8 kg m2 around any diameter and is carrying current to produce a... View Article
A force F = (i + 2j + 3k) N acts at a point (4i + 3j – k) m.
A force F = (i + 2j + 3k) N acts at a point (4i + 3j – k) m.... View Article
A compound microscope consists of an objective lens of focal length 1 cm
A compound microscope consists of an objective lens of focal length 1 cm and an eyepiece of focal length 5... View Article
A beam of electrons of energy E scatters from a target
A beam of electrons of energy E scatters from a target having atomic spacing of 1Å. The first maximum intensity... View Article
Two concentric circular coils, C1 and C2, are placed in the XY plane.
Two concentric circular coils, C1 and C2, are placed in the XY plane. C1 has 500 turns, and a radius... View Article
A particle of mass 200 Me V/c2 collides with a hydrogen atom at rest.
A particle of mass 200 Me V/c2 collides with a hydrogen atom at rest. Soon after the collision, the particle... View Article
A physical quantity z depends on four observables a, b, c and d
A physical quantity z depends on four observables a, b, c and d, as z = [a2b2/3 / √c d3].... View Article
For a concave lens of focal length f
For a concave lens of focal length f, the relationship between object and image distances u and v, respectively, from... View Article
An electron is constrained to move along the y-axis with a speed of 0.1 c
An electron is constrained to move along the y-axis with a speed of 0.1 c (c is the speed of... View Article
Number of molecules in a volume of 4 cm3 of a perfect monoatomic gas
Number of molecules in a volume of 4 cm3 of a perfect monatomic gas at some temperature T and at... View Article
