- ACorpuscular theory
- BHuygens' wave theory
- CElectromagnetic wave theory
- DPlanck's theory
Explanation:
Electromagnetic wave theory explains light as being composed of electric field vibrating in planes.
Polarisation of light refers to vibrating electric field in a particular plane.
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1000 small water drops each of radius r and charge q coalesce together to form one spherical drop. The potential of the big drop is larger than that of the smaller drop by a factor of
|
(a) 1000 |
(b) 100 |
(c) 10 |
(d) 1 |
Due to the flow of current in a circular loop of radius R, the magnetic induction produced at the centre of the loop is B. The magnetic moment of the loop is (![]()
|
(a) |
(b) |
(c) |
(d) |
An electron is accelerated through a potential difference of 200 volts. If e/m for the electron be 1.6
coulomb/kg, the velocity acquired by the electron will be
|
(a) 8 |
(b) 8 |
(c) 5.9 |
(d) 5.9 |
The idea of the quantum nature of light has emerged in an attempt to explain
|
(a) Interference |
(b) Diffraction |
|
(c) Radiation spectrum of a black body |
(d) Polarisation |