Physics Energy travels from Sun to Earth through Modulation Conduction Convection Radiation Modulation Conduction Convection Radiation ANSWER DOWNLOAD EXAMIANS APP
Physics Cloudy nights are warmer compared to clear cloudless nights, because clouds mainly Prevent cold waves from the sky descending on earth Produce heat and radiate it toward earth Reflect back the heat given by earth Absorb heat from the atmosphere send it towards earth Prevent cold waves from the sky descending on earth Produce heat and radiate it toward earth Reflect back the heat given by earth Absorb heat from the atmosphere send it towards earth ANSWER DOWNLOAD EXAMIANS APP
Physics What is refractive index ? None of above It is defined as the product of speed of light in medium and in vacuum. It is defined as the ratio of speed of light in vacuum to the speed of light in the medium. It is defined as the ratio of speed of light in the medium to the speed of light in vacuum. None of above It is defined as the product of speed of light in medium and in vacuum. It is defined as the ratio of speed of light in vacuum to the speed of light in the medium. It is defined as the ratio of speed of light in the medium to the speed of light in vacuum. ANSWER DOWNLOAD EXAMIANS APP
Physics The number of waves per second in a sound is called ________ of that sound. Displacement Velocity Acceleration Frequency Displacement Velocity Acceleration Frequency ANSWER DOWNLOAD EXAMIANS APP
Physics A doppler effect occurs when a source of sound moves None of these Towards you Both A & B Away from you None of these Towards you Both A & B Away from you ANSWER DOWNLOAD EXAMIANS APP
Physics Which among the following is false about displacement? Its SI unit is meter It is always positive It can be positive, negative or zero Displacement is never greater than Distance Its SI unit is meter It is always positive It can be positive, negative or zero Displacement is never greater than Distance ANSWER DOWNLOAD EXAMIANS APP
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