Physics Why are we able to hear short wave broadcasts better than long wave broadcasts ? By convention, short waves are meant for long distances, whereas long waves are reserved for short distances. Short waves are more energetic than long waves. Short waves are unaffected by atmospheric disturbances. Short wave broadcasts are made by nearby radio stations. By convention, short waves are meant for long distances, whereas long waves are reserved for short distances. Short waves are more energetic than long waves. Short waves are unaffected by atmospheric disturbances. Short wave broadcasts are made by nearby radio stations. ANSWER DOWNLOAD EXAMIANS APP
Physics What device converts light energy to electrical energy? Thermocouple Photodiode Heliostats Photovoltaic cell Thermocouple Photodiode Heliostats Photovoltaic cell ANSWER DOWNLOAD EXAMIANS APP
Physics The frequency of direct current is ________ 100 HZ 60 HZ 50 HZ Zero 100 HZ 60 HZ 50 HZ Zero ANSWER DOWNLOAD EXAMIANS APP
Physics Which one of the following is responsible for the working of Newton's colour disc experiment ? Formation of impure spectra Formation of pure spectra Persistence of vision Principle of complementary colour Formation of impure spectra Formation of pure spectra Persistence of vision Principle of complementary colour ANSWER DOWNLOAD EXAMIANS APP
Physics Energy that is produced commercially from coal is called Thermal energy Potential energy Light energy Kinetic energy Thermal energy Potential energy Light energy Kinetic energy ANSWER DOWNLOAD EXAMIANS APP
Physics Red light is used for signals because it has Long wavelength High intensity Low refraction in the medium High frequency Long wavelength High intensity Low refraction in the medium High frequency ANSWER DOWNLOAD EXAMIANS APP
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