An antenna behaves as resonant circuit only when its length is ………
(A) λ/2
(B) λ/4
(C) λ
(D) n λ/2
1 Answers
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(a) The length of Rameshs notebook is 9 cm 5 mm. What will be its length in cm? (b) The length of a young gram plant is 65 mm. Express its length in c
Correct Answer - (a) 9.5 सेमी: `" "`(b) 6.5 सेमी:
2 Answers 1 views
If a nation behaves aggressively with another country, the second country should ……………..
C) try to solve the issue with political bilateral discussion
2 Answers 4 views
The Convex lens behaves as a converging lens if it is kept in a medium with refractive index less than the refractive index of the lens.
B) Both statements are false
2 Answers 1 views
An air bubble in water behaves like a ……………………
B) diverging lens
2 Answers 1 views
Air bubble in water behaves like a diverging lens because ……………………
A) refractive index of air is less than the refractive index of water
2 Answers 1 views
If the potential difference in a circuit is 240 V and the resistance is 60 Ω then the current flowing through the circuit is …………………….
Correct option is A) 300 A
2 Answers 2 views
When radio waves from transmitting antenna reach the receiving antenna directly or after reflection in the ionosphere
Correct option is: (C) sky wave propagation
2 Answers 1 views
The power radiated by linear antenna of length 7’ is proportional to (A = wavelength)
Correct option is: (D) \((\frac{l}{λ})^2\)
2 Answers 1 views
At the time of short-circuit, the current in the circuit:
Correct Answer - C The correct option is (c)
2 Answers 1 views
Statement-1 : A parallel resonance circuit is called a rejector circuit. statement-2 : At resonance frequency, current is completely cut off.
Correct Answer - A Both the statements are ture, and statement-2 is correct explanaiton of statement-1.
2 Answers 1 views