Physics Red light is used for signals because it has High frequency Low refraction in the medium Long wavelength High intensity High frequency Low refraction in the medium Long wavelength High intensity ANSWER DOWNLOAD EXAMIANS APP
Physics Mirage is due to: Depletion of ozone layer in the atmosphere Magnetic disturbances in the atmosphere Equal heating of different parts of the atmosphere Unequal heating of different parts of the atmosphere Depletion of ozone layer in the atmosphere Magnetic disturbances in the atmosphere Equal heating of different parts of the atmosphere Unequal heating of different parts of the atmosphere ANSWER DOWNLOAD EXAMIANS APP
Physics Atomic hydrogen has a life period of One minute One day One hour A fraction of a second One minute One day One hour A fraction of a second ANSWER DOWNLOAD EXAMIANS APP
Physics Find the resistance (in mega) of a wire of length 20m, cross sectional area 1 cm2 and made of a material of resistivity 200m. 40 80 4000 2000 40 80 4000 2000 ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following has the shortest wavelength? Gamma rays Radio waves Infrared rays Microwaves Gamma rays Radio waves Infrared rays Microwaves ANSWER DOWNLOAD EXAMIANS APP
Physics After removing two electrons from helium atom it become? X rays UV rays Gama particle Alpha particle X rays UV rays Gama particle Alpha particle ANSWER DOWNLOAD EXAMIANS APP
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