Nuclei — Physics STD 12 Science — Question

In a Young’s double slit experiment, 12 fringes are observed to be formed in a certain segment of the screen when light of wavelength 600 nm is used. If the wavelength of light is changed to 400 nm, number of fringes observed in the same segment of the screen is given by(a) 12    (b) 18(c) 24       (d) 30

Which is the frequency range of gamma rays from the following?

The work done against electrostatic force gets stored in which form of energy?

The frequency of the incident light falling on a photosensitive metal plate is doubled, the kinetic energy of the emitted photoelectrons is(a) Double the earlier value(b) Unchanged(c) More than doubled(d) Less than doubled

To explain his theory, Bohr used(a) Conservation of linear momentum(b) Conservation of angular momentum(c) Conservation of quantum frequency(d) Conservation of energy

A conducting resistor is joined with a battery. If the temperature of the conductor is changed with the cooling process, then the magnitude of current flowing:

Two equal positive charges are kept at points A and B. The electric potential at the points between A and B (excluding these points) is studied while moving from A to B. The potential.

1. Continuously increases.
2. Continuously decreases.
3. Increases then decreases.
4. Decreases then increases.

It is essential to consider light as a stream of photons to explain:

When half of a lens is wrapped in a black cloth, what will be the effect on the image formed by the lens?

A capacitor works in: