Consider the following statements: A person in a spaceship located half way between the earth and the sun will notice that the :1) sky is jet black.2) stars do not twinkle3) temperature outside the spaceship is much higher than that on the surface of the earth. Which of the statement(s) given above...
Einstein’s photoelectric equation states that hν = W0 + Ek in this equation, Ek refers to the
The service area of space wave communication increases by –
Consider the following statements:In a nuclear reactor, self-sustained chain reaction is possible, b….
Consider the following statements:In a nuclear reactor, self-sustained chain reaction is possible, because:1) More neutrons are released in each of the fission reactions.2) The neutrons immediately take part in the fission process.3) The fast neutrons are slowed down by graphite.4) Every neutron released in the fission reaction initiates further fission.Which...
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Consider the following statements in respect of India advanced satellite INSAT–4A:1) INSAT-4A was ….
Consider the following statements in respect of India advanced satellite INSAT–4A:1) INSAT-4A was launched in December, 2005 from New Mexico.2) The European Commercial Launch Service Provider Arianespace was associated with the launch of INSA T-4A.3) Tata-Sky; a digital cable service provider; is associated with DTH television broadcasting service from...
Audio signal cannot be transmitted because:
In frequency modulation:
Electromagnetic waves with frequencies greater than the critical frequency of ionosphere cannot be u….
Electromagnetic waves with frequencies greater than the critical frequency of ionosphere cannot be used for communication using sky wave propagation because:
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