Physics Why does'nt the hydrogen atom emit X-rays? It is very small in size It has only one electron It is highly electropositive Its energy levels are very close to each other It is very small in size It has only one electron It is highly electropositive Its energy levels are very close to each other ANSWER DOWNLOAD EXAMIANS APP
Physics The wave like properties of electrons are useful in Lasers Magnifying objects All of these Weather reports Lasers Magnifying objects All of these Weather reports ANSWER DOWNLOAD EXAMIANS APP
Physics One watt-hour is equivalent to 6.3 x 103 J 3.6 x 10-3 J 6.3 x 10-7 J 3.6 x 103 J 6.3 x 103 J 3.6 x 10-3 J 6.3 x 10-7 J 3.6 x 103 J ANSWER DOWNLOAD EXAMIANS APP
Physics Copper wires are generally used for electrical power transmission instead of iron wire because : Copper is lighter than iron Copper is a better conductor of electricity than iron Copper can take higher power than iron Copper is cheaper than iron Copper is lighter than iron Copper is a better conductor of electricity than iron Copper can take higher power than iron Copper is cheaper than iron ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following metals is used for the manufacture of heating elements provided in electric iron ? Nichrome Nickel Tungsten Chromium Nichrome Nickel Tungsten Chromium ANSWER DOWNLOAD EXAMIANS APP
Physics A body is initially moving with a velocity of 5 m/s. It undergoes an acceleration of 2 m/s2 for 4 seconds. Find the displacement (in m) of this body in these 4 seconds. 8 4 36 72 8 4 36 72 ANSWER DOWNLOAD EXAMIANS APP
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