List of top Questions asked in UP Board XII- 2025

State and prove Ampere's circuital law.
Explain the meaning of polarisation of light and show the difference between polarised and unpolarised light with the help of a suitable diagram.
Write the unit of electric flux.
Define electromotive force of a cell.
Self-inductance of a coil is 6 mH and the rate of flow of current in it is $10^3$ A/s. Find the induced emf produced in the coil.
Mention the major drawbacks of Rutherford's atomic model.
In a single-slit diffraction pattern, the angle of diffraction for the second minimum is $60^\circ$. Find the width of the slit in terms of $\lambda$.
To measure potential difference from a galvanometer, we connect in it:
In electromagnetic waves, phase difference between electric and magnetic field vectors is:
Prism angle of a prism is $A$ and angle of minimum deviation is equal to prism angle. Refractive index of the material of prism will be:
The unit of magnetic dipole moment is
Threshold wavelength for a metal surface is 2000 \AA. On incidence of radiation of 1000 \AA, the kinetic energy of emitted photoelectrons will be
Charge on a piece of metal is \(-3.2\) coulomb. Number of excess electrons in the metal is: