MCQ
Which of one is correct
- ✓$\mathrm{E}^2=\mathrm{p}^2 \mathrm{c}^2$
- B$\mathrm{E}^2=\mathrm{p}^2 \mathrm{c}$
- C$\mathrm{E}^2=\mathrm{pc}^2$
- D$\mathrm{E}^2=\mathrm{p}^2 / \mathrm{c}^2$
✓
Answer
Correct option: A.
$\mathrm{E}^2=\mathrm{p}^2 \mathrm{c}^2$
$\mathrm{E}^2=\mathrm{p}^2 \mathrm{c}^2$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
A magnetic field can be produced by:
According to oersted, around a current carrying conductor, magnetic field exists:
A diver in a swimming pool wants to signal his distress to a person lying on the edge of the pool by flashing his water proof flash light (a) He must direct the beam vertically upwards(b) He has to direct the beam horizontally(c) He has to direct the beam at an angle to the vertical which is slightly less than the critical angle of incidence for total internal reflection(d) He has to direct the beam at an angle to the vertical which is slightly more than the critical angle of incidence for the total internal reflection
A horizontal loop abcd is moved across the pole pieces of a magnet as shown in fig. with a constant speed $v.$ When the edge ab of the loop enters the pole pieces at time $t = 0 \sec.$ Which one of the following graphs represents correctly the induced emf in the coil
→The condition under which a microwave over heats up a food item containing water molecules most efficiently is:
Electromagnetic radiation of highest frequency is(a) Infrared radiations(b) Visible radiation(c) Radio waves(d) g-rays
Assertion : A circular loop carrying current lies in XY plane with its center at origin having a magnetic flux in negative Z-axis.
Reason : Magnetic flux direction is independent of the direction of current in the conductor.(a) If both assertion and reason are true and the reason is the correct explanation of the assertion(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.(c) If assertion is true but reason is false.(d) If the assertion and reason both are false.
Reason : Magnetic flux direction is independent of the direction of current in the conductor.(a) If both assertion and reason are true and the reason is the correct explanation of the assertion(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.(c) If assertion is true but reason is false.(d) If the assertion and reason both are false.
Three transparent media of refractive indices $\mu_1,\mu_2$ and $\mu_3.$ A point object $O$ is placed in the medium $\mu_2.$ If the entire medium on the right of the spherical surface has refractive index $\mu_1,$ the image forms at $O\ '$. If this entire medium has refractive index $\mu_3,$ the image forms at $O"$. In the situation shown:
→Kinetic energy with the electrons are emitted from the metal surface due to photoelectric effect is:
The magnetic field energy in an inductor changes from maximum value to minimum value in 5.0ms when connected to an AC source. The frequency of the source: