Physics Cloudy nights are warmer compared to clear cloudless nights, because clouds mainly Produce heat and radiate it toward earth Absorb heat from the atmosphere send it towards earth Prevent cold waves from the sky descending on earth Reflect back the heat given by earth Produce heat and radiate it toward earth Absorb heat from the atmosphere send it towards earth Prevent cold waves from the sky descending on earth Reflect back the heat given by earth ANSWER DOWNLOAD EXAMIANS APP
Physics The frequency of ultrasound wave is typically Above 20 kHz Above 20,000 kHz Below 02 kHz Below 20 kHz Above 20 kHz Above 20,000 kHz Below 02 kHz Below 20 kHz ANSWER DOWNLOAD EXAMIANS APP
Physics A standing wave occurs when The amplitude of a wave exceeds its wavelength Two waves overlap The speed of the wave is zero or near zero A wave reflects upon itself The amplitude of a wave exceeds its wavelength Two waves overlap The speed of the wave is zero or near zero A wave reflects upon itself ANSWER DOWNLOAD EXAMIANS APP
Physics The part of the eye having the largest refractive index is : Lens Cornea Vitreous humor Aqueous humor Lens Cornea Vitreous humor Aqueous humor ANSWER DOWNLOAD EXAMIANS APP
Physics The work done by the string of a simple pendulum during one complete oscillation is equal to Zero Kinetic energy of the pendulum Total energy of the pendulum Potential energy of the pendulum Zero Kinetic energy of the pendulum Total energy of the pendulum Potential energy of the pendulum ANSWER DOWNLOAD EXAMIANS APP
Physics Ice cubes are added to a glass of pure water and a glass of pure alcohol. The ice would be At the same level in both At a higher level in water At a higher level in alcohol Floating in alcohol and sinking in water At the same level in both At a higher level in water At a higher level in alcohol Floating in alcohol and sinking in water ANSWER DOWNLOAD EXAMIANS APP
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