MCQ
Photoelectric effect was successfully explained first by:
- APlanck
- BHallwash
- CHertz
- ✓Einsterin
✓
Answer
Correct option: D.
Einsterin
Photoelectric effect was successfully explained first by Einstein.
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
Which is not an electrostatic phenomenon:
In a good conductor the energy gap between the conduction band and the valence band is
For a common base circuit if $\frac{ I _{ C }}{ I _{ E }}=0.98$ then current gain for common emitter circuit will be
→Internal resistance of the cell is:
Charge on an $\alpha - \text{particle}$ is:
→When a soap bubble is negatively charged, its radius is:
Alternating current is one which changes in its:
Resistance of a circuit is $12 \Omega$ and impedance is $15 \Omega$. The power factor of the circuit is :
→The solar constant on the surface of the earth is $S$. What will be its value on the surface of another planet which is about $ 5.3\, A.U$. away from sun
→A solid conducting sphere of radius a has a net positive charge 2Q. A conducting spherical shell of inner radius b and outer radius c is concentric with the solid sphere and has a net charge – Q. The surface charge density on the inner and outer surfaces of the spherical shell will be
