Physics Which best describes how air moves during convection? Cool air falls down Air always falls down Warm air falls down Cool air is replaced by warm air Cool air falls down Air always falls down Warm air falls down Cool air is replaced by warm air ANSWER DOWNLOAD EXAMIANS APP
Physics What is the phenomenon which established the transverse nature of light ? Interference Diffraction Reflection Polarisation Interference Diffraction Reflection Polarisation ANSWER DOWNLOAD EXAMIANS APP
Physics Hydroscope is an instrument that shows changes in: Atmospheric humidity Sound under water None of these Density of liquid Atmospheric humidity Sound under water None of these Density of liquid ANSWER DOWNLOAD EXAMIANS APP
Physics Which one of the following wavelengths of light is most effective in photosynthesis ? Green Blue Yellow Orange Green Blue Yellow Orange ANSWER DOWNLOAD EXAMIANS APP
Physics An electron microscope gives higher magnification than an optical microscope, because : It uses more powerful lenses The velocity of electron is smaller than that of visible light The wavelength of electrons is smaller as compared to the wavelength of visible light The electrons have more energy than the light particles It uses more powerful lenses The velocity of electron is smaller than that of visible light The wavelength of electrons is smaller as compared to the wavelength of visible light The electrons have more energy than the light particles ANSWER DOWNLOAD EXAMIANS APP
Physics Which microscope is often used to view metal surfaces? Scanning tunneling microscopes None of these Electron microscopes Optical microscopes Scanning tunneling microscopes None of these Electron microscopes Optical microscopes ANSWER DOWNLOAD EXAMIANS APP
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