MCQ
Which two physical quantities have same units?
  • A
    Work function and threshold frequency
  • Planck's constant and angular momentum
  • C
    Work function and stopping potential
  • D
    Planck's constant and angular velocity

Answer

Correct option: B.
Planck's constant and angular momentum
B

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

If the directions of electric and magnetic field vectors of a plane electromagnetic wave are along positive y-direction and positive z-direction respectively, then the direction of propagation of the wave is along:

A nucleus of atomic mass A and atomic number Z emits β - particles. The atomic mass and atomic number of the resulting nucleus are

(a) A, Z

(b) A + 1, Z

(c) A, Z + 1

(d) A – 4, Z - 2

Work done by an external force in bringing a unit positive charge from infinity to a point is called as:

If an electron jumps from 1st orbital to 3rd orbital, then it will

(a) Absorb energy

(b) Release energy

(c) No gain of energy

(d) None of these

A magnetic field cannot exert any force on a:

In the disintegration series   The value of Z and A respectively will be

(a) 92, 236

(b) 88, 230

(c) 90, 234

(d) 91, 234

A signal emitted by an antenna from a certain point can be received at another point of the surface in the form of

(a) Sky wave

(b) Ground wave

(c) Sea wave

(d) Both (a) and (b)

Electrical energy $U _0$ is stored in a charged parallel plate capacitor. On increasing the distance between the plates of a capacitor, double to initial distance the electrical energy will be :
Mark out the correct options.
  1. Diamagnetism occurs in all materials.
  2. Diamagnetism results from the partial alignment of permanent magnetic moment.
  3. The magnetizing field intensity H is always zero in free space.
  4. The magnetic field of induced magnetic moment is opposite to the applied field.
A charge q is moving with a velocity v parallel to a magnetic field B. Force on the charge due to magnetic field is: