Physics Bats can sense obstacles because they produce Supersonic sound waves Micro sound waves Ultrasonic sound waves Infrasonic sound waves Supersonic sound waves Micro sound waves Ultrasonic sound waves Infrasonic sound waves ANSWER DOWNLOAD EXAMIANS APP
Physics On a stationary sail boat, air is blown from a fan attached to the boat. The boat moves in opposite direction in which the air is blown spins around moves in the same direction in which air blows does not move moves in opposite direction in which the air is blown spins around moves in the same direction in which air blows does not move ANSWER DOWNLOAD EXAMIANS APP
Physics Oil rises up the wick in a lamp because Of the capillary action phenomenon Of the diffusion of oil through the wick Oil is very light Of the surface tension phenomenon Of the capillary action phenomenon Of the diffusion of oil through the wick Oil is very light Of the surface tension phenomenon ANSWER DOWNLOAD EXAMIANS APP
Physics Every hot object emits ________ Visible light Ultraviolet rays Infrared rays X–rays Visible light Ultraviolet rays Infrared rays X–rays ANSWER DOWNLOAD EXAMIANS APP
Physics An electron microscope gives higher magnification than an optical microscope, because : The electrons have more energy than the light particles The wavelength of electrons is smaller as compared to the wavelength of visible light The velocity of electron is smaller than that of visible light It uses more powerful lenses The electrons have more energy than the light particles The wavelength of electrons is smaller as compared to the wavelength of visible light The velocity of electron is smaller than that of visible light It uses more powerful lenses ANSWER DOWNLOAD EXAMIANS APP
Physics The wavelength of a wave is the distance between Crest and Crest Both B & C Trough and Trough Crest and Trough Crest and Crest Both B & C Trough and Trough Crest and Trough ANSWER DOWNLOAD EXAMIANS APP
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