12th Class Physics Sample Paper Physics Sample Paper-7

  • question_answer
    In the famous conversation, Rakesh Sharma, the first. Indian astronaut in space, was asked by the Prime Minister Indira Gandhi as to how India looked from space. To which he replied, 'Sare jahan se accha' (better than the whole world).
    (i) Which scientific mode of communicating enabled the Prime Minister to speak to the astronaut?
    (ii) What type of modulation is required for commercial broadcast of voice signals?
    (iii) Which values are being reflected in the reply given by the astronaut?


    (i) Radio wave communication system.
    (ii) Frequency modulation.
    (iii) Patriotism and love for the country, presence of mind.

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