Atoms — Physics STD 12 Science — Question

Calculate the magnetic dipole moment corresponding to the motion of the electron in the ground state of a hydrogen atom.

Explain frequency and wavelength of electromagnetic spectrum.

Does the force on a charge due to another charge depend on the charges present nearby?

On the basis of the charging of capacitor, clarify that there is something missing in the Ampere circuital law.

Explain electrostatic potential.

Three point charges +Q, -2Q and -3Q are placed at the vertices of an equilateral triangle ABC of side l.
If these charges are displaced to the mid points A₁, B₁ and C₁ respectively, calculate the amount of work done in shifting the charges to the new locations.

Two prisms of identical geometrical shape are combined with their refracting angles oppositely directed. The materials of the prisms have refractive indices 1.52 and 1.62 for violet light. A violet ray is deviated by 1.0° when passes symmetrically through this combination. What is the angle of the prisms?

Draw a labelled ray diagram of an astronomical telescope in the near point adjustment position.
A giant refracting telescope at an observatory has an objective lens of focal length 15m and an eyepiece of focal length 1.0cm. If this telescope is used to view the Moon, find the diameter of the image of the Moon formed by the objective lens. The diameter of the Moon is 3.48 × 10⁶m, and the radius of lunar orbit is 3.8 × 10⁸m.

A cylinder rotating at an angular speed of 50rev/s is brought in contact with an identical stationary cylinder. Because of the kinetic friction, torques act on the two cylinders, accelerating the stationary one and decelerating the moving one. If the common magnitude of the acceleration and deceleration be one revolution per second square, how long will it take before the two cylinders have equal angular speed?