Physics Red light is used for signals because it has High intensity Long wavelength High frequency Low refraction in the medium High intensity Long wavelength High frequency Low refraction in the medium ANSWER DOWNLOAD EXAMIANS APP
Physics The mercury and sodium street lamps light up because of : Electron emission Atomic emission Electron absorption Atomic absorption Electron emission Atomic emission Electron absorption Atomic absorption ANSWER DOWNLOAD EXAMIANS APP
Physics Light Emitting Diodes (LED) is used in fancy electronic devices such as toys emit radio waves ultraviolet light X-rays visible light radio waves ultraviolet light X-rays visible light ANSWER DOWNLOAD EXAMIANS APP
Physics One billionth of a second is called Picoseconds Millisecond Microsecond Nanosecond Picoseconds Millisecond Microsecond Nanosecond ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following supports particle nature of photons ? Diffraction Interference Polarization Photoelectric effect Diffraction Interference Polarization Photoelectric effect ANSWER DOWNLOAD EXAMIANS APP
Physics Light beam which is highly directional is called: Eraser Maser Grazer Laser Eraser Maser Grazer Laser ANSWER DOWNLOAD EXAMIANS APP
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