Physics Light travels in a straight line (rectilinear propagation of light). This statement does hold if the medium of travel for light is Made up of slabs of different refractive indices Homogeneous and transparent Of variable refractive index Inhomogeneous and transparent Made up of slabs of different refractive indices Homogeneous and transparent Of variable refractive index Inhomogeneous and transparent ANSWER DOWNLOAD EXAMIANS APP
Physics A bimetal made copper and iron strips welded together is straight at room temperature. It is held vertically with iron strip towards left and copper strip towards right. If this bimetal is heated, it will Bend towards left None of these Remain straight Bend towards right Bend towards left None of these Remain straight Bend towards right ANSWER DOWNLOAD EXAMIANS APP
Physics The ''Greenhouse effect' is mainly due to increase in atmospheric Ozone Carbon dioxide Sulphur dioxide Nitrogen Ozone Carbon dioxide Sulphur dioxide Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Physics Sound following a flash of lightning is called Stoning Bolting Thunder Cloud clash Stoning Bolting Thunder Cloud clash ANSWER DOWNLOAD EXAMIANS APP
Physics Stars twinkle because None of these the distance of the stars from the earth changes with time. the refractive index of the different layers of the earth's atmosphere ch the intensity of light emitted by them changes with time. None of these the distance of the stars from the earth changes with time. the refractive index of the different layers of the earth's atmosphere ch the intensity of light emitted by them changes with time. ANSWER DOWNLOAD EXAMIANS APP
Physics In which region of electromagnetic spectrum does the Lyman series of hydrogen atom lie ? Visible Ultraviolet Infrared X-ray Visible Ultraviolet Infrared X-ray ANSWER DOWNLOAD EXAMIANS APP
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