Physics What is the minimum distance (in metres) required to hear an echo? 21 13 17 10 21 13 17 10 ANSWER DOWNLOAD EXAMIANS APP
Physics Decibel is the unit used for Speed of light Radio wave frequency Intensity of heat Intensity of sound Speed of light Radio wave frequency Intensity of heat Intensity of sound ANSWER DOWNLOAD EXAMIANS APP
Physics Why are we able to hear short wave broadcasts better than long wave broadcasts ? Short waves are unaffected by atmospheric disturbances. 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 wave broadcasts are made by nearby radio stations. Short waves are unaffected by atmospheric disturbances. 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 wave broadcasts are made by nearby radio stations. ANSWER DOWNLOAD EXAMIANS APP
Physics In heating frozen foods in sealed pouches in a microwaves, why do you first poke holes in the pouch? To prevent the steam pressure from bursting open the pouch To allow the heat to get into the food through the hole To allow the microwaves to get into the food through the holes To allow the aroma of the food to come out through the holes To prevent the steam pressure from bursting open the pouch To allow the heat to get into the food through the hole To allow the microwaves to get into the food through the holes To allow the aroma of the food to come out through the holes ANSWER DOWNLOAD EXAMIANS APP
Physics If you look into a mirror and find that the image (your reflection) is smaller than you, then the type of the mirror is: Plano-concave mirror Plane mirror Convex mirror Concave mirror Plano-concave mirror Plane mirror Convex mirror Concave mirror ANSWER DOWNLOAD EXAMIANS APP
Physics The ''Choke' used with a tube light is basically A resistor A transformer An inductor A capacitor A resistor A transformer An inductor A capacitor ANSWER DOWNLOAD EXAMIANS APP
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