A TV Tower has a height h. Derive expression for the maximum distance upto which signals can be received on earth.
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What is the reason for proton- proton attraction inside the nucleus according to nuclear physics? (Sanjeev Asked) Answer: Inside the nucleus where the nucleons are very close to each other, the force which holds them together is the nuclear force, which is the strongest force in nature. The electrostatic force between protons is negligibly small…… Continue reading Why protons attract inside a nucleus?
One mark questions What is the meant by the term attenuation ? Why ground wave transmission is restricted to 1500 kHz? Define critical frequency in sky wave propagation. What type of modulation is required in TV transmission? Why AM radio reception is affected by electrical disturbances while FM radio reception is not? What should be…… Continue reading Communication Systems : Revision Test
PHYSICS TIME 3 HRS MAX MARKS: 70 GENERAL INSTRUCTIONS: All questions are compulsory. There are 30 questions in total. Questions 1 to 8 carry one mark each, questions 9 to 18 carry 2 marks each, questions 19 to 27 carry 3 marks each and questions 28 to 30 carry 5 marks each. There is no…… Continue reading MODEL QUESTION PAPER FOR AISSCE 2008