Electromagnetic Waves — Physics STD 12 Science — Question

A charged particle enters a uniform magnetic field and parallel to its direction. What is the path of the particle?

Two equal balls having equal positive charge ‘q’ coulombs are suspended by two insulating strings of equal length. What would be the effect on the force when a plastic sheet is inserted between the two?

The speeds of red light and yellow light are exactly same:

1. In vacuum but not in air.
2. In air but not in vacuum.
3. In vacuum as well as in air.
4. Neither in vacuum nor in air.

A stone is fastened to one end of a string and is whirled in a vertical circle of radius R. Find the minimum speed the stone can have at the highest point of the circle.

To which part of the electromagnetic spectrum does a wave of frequency 3 x 10¹³ Hz belong?

How does the angle of minimum deviation of a glass prism vary, if the incident violet light is replaced by red light? Give reason.

Which orientation of an electric dipole in a uniform electric field would correspond to stable equilibrium?

How does the angular separation between fringes in single-slit diffraction experiment change when the distance of separation between the slit and screen is doubled?

What is the height of the final image of the tower if it is formed at 25cm?