Physics Why are we able to hear short wave broadcasts better than long wave broadcasts ? 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. By convention, short waves are meant for long distances, whereas long waves are reserved for short distances. ANSWER DOWNLOAD EXAMIANS APP
Physics The snow on the mountains does not melt all at once when it is heated by the sun because: It has a high latent heat of fusion It has a low specific heat capacity It becomes very hard It reflects most of the heat from the sun It has a high latent heat of fusion It has a low specific heat capacity It becomes very hard It reflects most of the heat from the sun ANSWER DOWNLOAD EXAMIANS APP
Physics Which one of the following determines the sharpness of image in a camera ? The exposure time The aperture The focal length of the lens Size of the camera The exposure time The aperture The focal length of the lens Size of the camera ANSWER DOWNLOAD EXAMIANS APP
Physics The atmospheric layer reflecting radio waves is called Mesosphere Ionosphere Stratosphere Ozonosphere Mesosphere Ionosphere Stratosphere Ozonosphere ANSWER DOWNLOAD EXAMIANS APP
Physics Hydraulic machines work under the Principle of : Floatation Law Newton's Law Pascal's Law Joules Law Floatation Law Newton's Law Pascal's Law Joules Law ANSWER DOWNLOAD EXAMIANS APP
Physics What is the escape velocity of the rocket in the earth? 10.2 km/sec 12.2 km/sec 13.2 km/sec 11.2 km/sec 10.2 km/sec 12.2 km/sec 13.2 km/sec 11.2 km/sec ANSWER DOWNLOAD EXAMIANS APP
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