A. Troposphere B. Ionosphere C. Mesosphere D. Stratosphere E. None of these The correct answer to the question: “Which of the following layers make radio transmission possible?” is “Ionosphere”.
A. Size of the earth in relation to that of moon B. Orbit of moon around earth C. Direction of rotation of earth around sun D. Area of the sun covered by the moon E. None of these The correct answer to the question: “Which of the following explains the reason why there is no … Read more
A. Optical fiber B. Transistor C. Decoder D. Photo diode E. None of these The correct answer to the question: “Television signals are converted into light signals by___________?” is “Photo diode”.
A. In asteroid belt between the orbits of Mars and Jupiter B. In asteroid belt between the orbits of Mars and Venus C. In asteroid belt between the orbits of Jupiter and Venus D. Everywhere in the sky E. None of these The correct answer to the question: “Where do most of Asteroids lie?” is … Read more
A. 2 B. 3 C. 0 D. 4 E. None of these
A. 4 days B. 12 days C. 16 days D. 8 days E. None of these The correct answer to the question: “The half life of a radioactive element is 8-days. How long it take to reduce it from 10 mg to 5 mg?” is “8 days”.
A. Doppler effect in which an object appears bluer when it is moving towards the observer or observer is moving towards the object. B. Turning a star from white to blue C. In future sun would become blue D. Black hole was blue at its start E. None of these The correct answer to the … Read more
A. Seasonal reversal of winds B. Revolution of earth C. Movement of clouds D. Rise in temperature E. Rain forests The correct answer to the question: “Monsoon is caused by____________________?” is “Seasonal reversal of winds”.
A. Uranium Oxide B. Uranium Plutonium carbide C. Uranium Plutonium Oxide D. Uranium thorium Oxide E. None of these The correct answer to the question: “Fuel used in a Fast Breeder Reactor is _____________?” is “Uranium Plutonium Oxide”.
A. Exosphere B. Ionosphere C. Troposphere D. Stratosphere E. Ozone layer The correct answer to the question: “Which of the following atmospheric layers help in radio communication?” is “Ionosphere”.