Physics The cover of a solar cooker is made of glass because It reflects sun's rays It retains the heat inside by the green house effect It absorbs sun's rays It rediates heat better than metals It reflects sun's rays It retains the heat inside by the green house effect It absorbs sun's rays It rediates heat better than metals ANSWER DOWNLOAD EXAMIANS APP
Physics The frequency of direct current is ________ Zero 60 HZ 50 HZ 100 HZ Zero 60 HZ 50 HZ 100 HZ ANSWER DOWNLOAD EXAMIANS APP
Physics If an ordinary glass tube and a glass capillary tube are both dipped in a beaker of water, water rises in Only the capillary tube Both Neither Only the glass tube Only the capillary tube Both Neither Only the glass tube ANSWER DOWNLOAD EXAMIANS APP
Physics Out of the following, which is not emitted by radioactive substance? Alpha particles Electromagnetic radiations Electrons Neutrons Alpha particles Electromagnetic radiations Electrons Neutrons ANSWER DOWNLOAD EXAMIANS APP
Physics Optical fibre works on which of the following principle of light? Total internal reflection Refraction Diffraction Reflection Total internal reflection Refraction Diffraction Reflection ANSWER DOWNLOAD EXAMIANS APP
Physics In radio-communication, the signals emitted by transmitting antenna are reflected on Troposphere Ozonosphere Stratosphere Ionosphere Troposphere Ozonosphere Stratosphere Ionosphere ANSWER DOWNLOAD EXAMIANS APP
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