Download App

Dual Nature of Radiation and Matter — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsDual Nature of Radiation and Matter1 Mark
Question
Photoelectric effect was successfully explained first by:
✓

Answer

  1. Einsterin
Explanation:
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.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from Dual Nature of Radiation and Matter→Dual Nature of Radiation and Matter — all question types→Physics STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

In AM, the centpercent modulation is achieved when(a) Carrier amplitude = signal amplitude(b) Carrier amplitude ≠  signal amplitude(c) Carrier frequency = signal frequency(d) Carrier frequency ≠ signal frequency
   
   
→
Rutherford performed his alpha scattering experiment using:
→
The average momentum of a molecule in a sample of an ideal gas depends on:
  1. Temperature.
  2. Number of moles.
  3. Volume.
  4. None of these.
→
The electrostatic potential due to an electric dipole is directly proportional to:
→
Two parallel wires carry currents of 20A and 40A in opposite directions. Another wire carying a current anti parallel to 20A is placed midway between the two wires. T he magnetic force on it will be:
  1. Towards 20A.
  2. Towards 40A.
  3. Zero.
  4. Perpendicular to the plane of the currents.
→
A thin lens is made up of a material of refractive index $\mu=1.51$. It is dipped into the water $(\mu=1.33)$. This lens will behave :
→
A particle of charge $-16 \times 10^{-18}$ coulomb moving with velocity $10\ ms^{-1}$ along the $x-$axis enters a region where a magnetic field of induction $B$ is along the $y-$axis, and an electric field of magnitude $10^4\ V/m$ is along the negative $z-$axis. If the charged particle continues moving along the $x-$axis, the magnitude of $B$ is
→
A spectrum is formed by a prism of dispersive power ‘ω’. If the angle of deviation is ‘δ’, then the angular dispersion is(a) ω/δ    (b) δ / ω (c) 1/ ωδ (d) ω δ
       
→
Which of the following statement is wrong(a) Voltmeter should have high resistance(b) Ammeter should have low resistance(c) Ammeter is placed in parallel across the conductor in a circuit(d) Voltmeter is placed in parallel across the conductor in a circuit
 
 
 
 
→
Three waves are given below. I. Sound waves, II. Visible light waves, III. X-rays. Which of the above waves cannot be polarised?
→