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In communication with help of antenna if height is doubled then the range covered which was initially r would become
Options
(a) √2r
(b) 3r
(c) 4r
(d) 5r
Correct Answer:
√2r
Explanation:
Range r = √(2Rh)
Where R is the radius of the earth and h is the height of the antenna
.·. r’ = √[2R(2h)] = √2 [√(2Rh)] = √2 r
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Topics: Electronic Devices
(124)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A body weighs 50 grams in air and 40 grams in water. How much would it weigh in a liquid
- The tension in a piano wire is 10 N. What should be the tension in the wire to produce
- The work of 146 kJ is performed in order to compress one kilo mole fo gas adiabatically
- A charged particle enters a uniform magnetic field with a certain speed at right angles
- The self induced e.m.f. in a 0.1 H coil when the current in it is changing
Topics: Electronic Devices (124)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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