For a charge Q1, the effect of charge Q2 on Q1 will be,

A)
F1 = F2
B)
F1 = -F2
C)
F1 = F2 = 0
D)
F1 and F2 are not equal

Correct Answer : Option (B) :   F1 = -F2

Explanation : The force of two charges with respect with each other is given by F1 and F2. Thus F1 + F2 = 0 and F1 = -F2.

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Radiation intensity in a given direction is the
A)
Energy radiated per square metre
B)
Power radiated per square metre
C)
Power radiated per unit solid angle in that direction
D)
None of the above

Correct Answer :   Power radiated per unit solid angle in that direction

Which of the following impedance inversion is obtained?
A)
Balun transformer
B)
A quarter wave line
C)
Short-circuited stub
D)
A half wave line

Correct Answer :   A quarter wave line

The wave in wave guide has
A)
Larger frequency than in the free space
B)
Diminishing wavelength than in the free space
C)
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D)
Larger wavelength than in the free space

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