Physics Who measured the velocity of light first ? Galileo Romer Einstein Newton Galileo Romer Einstein Newton ANSWER DOWNLOAD EXAMIANS APP
Physics Copper wires are generally used for electrical power transmission instead of iron wire because : Copper can take higher power than iron Copper is a better conductor of electricity than iron Copper is cheaper than iron Copper is lighter than iron Copper can take higher power than iron Copper is a better conductor of electricity than iron Copper is cheaper than iron Copper is lighter than iron ANSWER DOWNLOAD EXAMIANS APP
Physics Hertz is a unit for measuring Frequency of waves Clarity of waves Intensity of waves Wavelength Frequency of waves Clarity of waves Intensity of waves Wavelength ANSWER DOWNLOAD EXAMIANS APP
Physics Man perceives sound vibrations in the frequency ranges of 0 – 5 Hz 6 – 10 Hz 20 – 20000 Hz 11 – 20 Hz 0 – 5 Hz 6 – 10 Hz 20 – 20000 Hz 11 – 20 Hz ANSWER DOWNLOAD EXAMIANS APP
Physics Which type of mirror is used in the head lights of vehicles ? Plane mirror Concave mirror Convex mirror Parabolic mirror Plane mirror Concave mirror Convex mirror Parabolic mirror ANSWER DOWNLOAD EXAMIANS APP
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