List of top Physics Questions

SI unit of electrical resistivity is
Which of the following is an insulator?
The image formed by a plane mirror is always:
The distance between the pole and the principal focus of a spherical mirror is called:
A diminished, virtual and erect image is formed by a
The mirror used by a dentist to see a large image of the teeth of the patients is
A ray of light travelling in air enters obliquely into water. This light ray
The focal length of a spherical mirror is \( 10 \, cm \). Its radius of curvature is:
In an electric circuit, the device used to prevent damage to the electrical appliances due to overloading is:
The magnetic field produced by a current carrying circular loop is strongest at
The region surrounding a magnet in which the influence of that magnet can be detected is called
The magnetic field at all points inside a solenoid carrying electric current:
The power of an electric motor that takes \( 5 \, A \) electric current from a \( 220 \, V \) transmission line is:
The direction of force on a current carrying conductor in a magnetic field is given by
If the electric current through a copper wire increases, the magnitude of the magnetic field produced at a given point:
One kilowatt hour is equal to
SI unit of electrical potential difference is
The device used to measure electric current in a circuit is called:
A continuous and closed path of an electric current is called an
One coulomb is equivalent to the charge contained in nearly
Work done to move a unit charge from one point to the other in an electric circuit is called
If a net charge \( Q \) flows across any cross-section of a conductor in time \( t \), then the current \( I \) through the cross-section is
An ideal Carnot engine has an efficiency of 40 %. The ratio of the temperature of the sink to that of the source is
If a particle is moving with a momentum of (2 × 1010) h kg·m/s, then the de Broglie wavelength associated with it (in angstrom) is (where h is Planck's constant)
The angular momentum of the electron revolving in the 2nd orbit is