Physics In SONAR which kind of wave is used? Ultrasonic Infrasonic Radio Audible sound Ultrasonic Infrasonic Radio Audible sound ANSWER DOWNLOAD EXAMIANS APP
Physics Optic fibres are used in : X-ray photos CAT scans Endoscopy Ultrasound scans X-ray photos CAT scans Endoscopy Ultrasound scans ANSWER DOWNLOAD EXAMIANS APP
Physics To measure the speed of an approaching car a police officer shines Radio waves on it Light waves on it Microwaves on it Ultra high frequency waves on it Radio waves on it Light waves on it Microwaves on it Ultra high frequency waves on it ANSWER DOWNLOAD EXAMIANS APP
Physics Electrons carry a Negative Charge Variable Charge Neutral Charge Positive Charge Negative Charge Variable Charge Neutral Charge Positive Charge ANSWER DOWNLOAD EXAMIANS APP
Physics If a carrier wave of 1000 kHz is used to carry the signal, the length of transmitting antenna will be equal to ________. 0.3 m 300 m 30 m 3 m 0.3 m 300 m 30 m 3 m ANSWER DOWNLOAD EXAMIANS APP
Physics It is dangerous to observe Solar eclipse with naked eyes because Ultraviolet radiations from Sun burn our retina Infrared radiations from sun burn our retina Cosmic rays reach eyes more during the eclipse All radiations from sun initiate chemical reactions in eyes Ultraviolet radiations from Sun burn our retina Infrared radiations from sun burn our retina Cosmic rays reach eyes more during the eclipse All radiations from sun initiate chemical reactions in eyes ANSWER DOWNLOAD EXAMIANS APP
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