Physics For which of the following substances, the resistance decreases with increase in temperature? Platinum Copper Nichrome Pure silicon Platinum Copper Nichrome Pure silicon ANSWER DOWNLOAD EXAMIANS APP
Physics When light passes from one medium to another, this phenomenon of change in its direction is called ________ Diffraction No option is correct Propagation Refraction Diffraction No option is correct Propagation Refraction ANSWER DOWNLOAD EXAMIANS APP
Physics What is the other name of Galileo's law of falling bodies? Newton's second law Newton's first law Law of motion Newton's third law Newton's second law Newton's first law Law of motion Newton's third law ANSWER DOWNLOAD EXAMIANS APP
Physics The frequency of direct current is ________ Zero 100 HZ 60 HZ 50 HZ Zero 100 HZ 60 HZ 50 HZ ANSWER DOWNLOAD EXAMIANS APP
Physics The cover of a solar cooker is made of glass because It rediates heat better than metals It retains the heat inside by the green house effect It reflects sun's rays It absorbs sun's rays It rediates heat better than metals It retains the heat inside by the green house effect It reflects sun's rays It absorbs sun's rays ANSWER DOWNLOAD EXAMIANS APP
Physics Two metallic wires made from copper have same length but the radius of wire 1 is half of that of wire 2. The resistance of wire 1 is R. If both the wires are joined together in series, the total resistance becomes R/2 5R/4 2R 3R/4 R/2 5R/4 2R 3R/4 ANSWER DOWNLOAD EXAMIANS APP
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