MCQ
Which theory of light is wave theory or particle theory?
- ADynamic physics
- BStatic physics
- ✓Quantum mechanics
- Dde $–$ Broglie hypothesis
✓
Answer
Correct option: C.
Quantum mechanics
The essential theory of light was further evolved from electromagnetics into quantum mechanics. Einstein believed light is a particle, i.e. a photon and that the flow of these particles $($photons$)$ is a wave.
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 positively charged particle moving along x-axis with a certain velocity enters a uniform electric field directed along positive y-axis. Its
A boy is trying to start a fire by focusing sunlight on a piece of paper using an equiconvex lens of focal length $10\,\, cm.$ The diameter of the sun is $1.39 \times 10^9\, m$ and its mean distance from the earth is $1.5 \times 10^{11}\,\, m.$ What is the diameter of the sun's image on the paper?
→$m ^2 V^{-1} s^{-1}$ is the SI unit of which of the following?
→A coil having n turns and resistance $R\, \Omega$ is connected with a galvanometer of resistance $4\,R\Omega $. This combination is moved in time $t$ seconds from a magnetic field $W_1$ weber to $W_2$ weber. The induced current in the circuit is
→A charged particle q is shot towards another charged particle Q which is fixed, with a speed v. It approaches Q upto a closest distance r and then returns. If q were given a speed 2v, the closest distances of approach would be
P-N diode is :
An ac generator consists of a coil of $200$ turns, $100\ cm$ in diameter. If the coil rotates at$ 500$ rpm in a magnetic field of $0.25T,$ then the maximum induced emf.
→Resistance of the wire is measured as $2\,\Omega$ and $3\,\Omega$ at $10^{\circ}C$ and $30^{\circ}C$ respectively. Temperature cocoefficient of resistance of the material of the wire is............$^{\circ}C ^{-1}$
→The forbidden gap in the energy bands of germanium at room temperature is about
$AC$ alternating emf $\mathrm{E}=110 \sqrt{2} \sin 100 \mathrm{t}$ volt is applied to a capacitor of $2 \mu \mathrm{F}$, the rms value of current in the circuit is.. . . . . .$\mathrm{mA}$.
→