- ARefraction.
- BInterference
- CDiffraction
- DPolarization.
Explanation:
Light in the form of a plane wave in space is said to be linearly polarized. Light is a transverse electromagnetic wave, but natural light is generally unpolarized, all planes of propagation being equally probable.
The process of making the light wave vibrated in a single plane is known as polarization.
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A compass needle will show which one of the following directions at the earth's magnetic pole
| (a) Vertical | (b) No particular direction |
| (c) Bent at 45° to the vertical | (d) Horizontal |
The magnetic susceptibility is
|
(a) |
(b) |
(c) |
(d) |
The coordination number of Cu is
|
(a) 1 |
(b) 6 |
(c) 8 |
(d) 12 |
Three capacitors each of capacitance 1μF are connected in parallel. To this combination, a fourth capacitor of capacitance 1μF is connected in series. The resultant capacitance of the system is
|
(a) 4μF |
(b) 2μF |
(c) |
(d) |
Two infinitely long parallel conducting plates having surface charge densities +σ and -σ respectively, are separated by a small distance. The medium between the plates is vacuum. If
is the dielectric permittivity of vacuum, then the electric field in the region between the plates is
|
(a) 0 volts/meter |
(b) |
(c) |
(d) |
In intrinsic semiconductor at room temperature, number of electrons and holes are
|
(a) Equal |
(b) Zero |
(c) Unequal |
(d) Infinite |
In which of the following remote sensing technique is not used
|
(a) Forest density |
(b) Pollution |
(c) Wetland mapping |
(d) Medical treatment |