Welcome to your Electromagnetic waves
1.
Frequency order for γ (B), X (A), UV (C)
2.
Biological importance of ozone layer
3.
Cause of greenhouse effect
4.
Velocity of EM wave parallel to
7.
Human body radiation is
8.
When light enters new medium, what is unchanged?
9.
Scientist proving EM waves existence
10.
Plane EM wave: E=6 V/m along y → B along?
11.
Which nutrient is primarily responsible for muscle building in the human body?
12.
E-field at 4 m from 1500 W source
13.
E-field at 3 m from 1500 W source
14.
Capacitance charging: displacement current
15.
EM wave eqn correctness
16.
Magnetic field magnitude for E=10⁴ V/m
17.
Increasing wavelength: devices
18.
Plane EM wave: f=2×10¹⁰ Hz, E=48 → λ=
19.
Wave E = E₀ sin(kx–ωt). What independent of λ?
20.
Direction of propagation =
21.
Field between capacitor plates
22.
Charge varies q = q₀ sin2πνt → displacement current
24.
EM wave E = E₀ sin(kx–ωt), B = B₀ sin… which true?
26.
Increasing wavelength order
28.
EM wave E=100 cos… dielectric ε:
29.
Avg energy density for E=50 sin…
31.
Light beam E₀=600 → magnetic force on q
34.
EM waves travel through
35.
E and B not perpendicular →
37.
Evidence EM waves transverse
38.
Average energy density =
39.
Free electron in EM wave moves
40.
If EM wave delivers momentum p, energy E
41.
1 GHz frequency belongs to
42.
1 GHz = microwave region.
43.
Raman spectroscopy uses
44.
EM wave in μr=1.3, εr=2.14 → speed
45.
Which gas is essential for photosynthesis?
