Physics Sound becomes hazardous noise pollution at decibels? Above 80 db Above 50 db Above 120 db Above 30 db Above 80 db Above 50 db Above 120 db Above 30 db ANSWER DOWNLOAD EXAMIANS APP
Physics To resolve an object in an electron microscope, The wavelength of the electrons must be greater than the diameter of the object. The wavelength of the electrons must be close to the diameter of the object Both A & B None of these The wavelength of the electrons must be greater than the diameter of the object. The wavelength of the electrons must be close to the diameter of the object Both A & B None of these ANSWER DOWNLOAD EXAMIANS APP
Physics Hot water is poured simultaneously in four metallic tumblers painted outside with different points. After some time the water will be found to have cooled most in the tumbler painted. Rough black Shining black Shining white Rough white Rough black Shining black Shining white Rough white ANSWER DOWNLOAD EXAMIANS APP
Physics Two vectors are said to be equal if Only their magnitudes are same Only their directions are same Magnitudes are same but directions are opposite Both magnitude and direction are same Only their magnitudes are same Only their directions are same Magnitudes are same but directions are opposite Both magnitude and direction are same ANSWER DOWNLOAD EXAMIANS APP
Physics What is the SI unit of temperature? Joule Celsius Kelvin Fahrenheit Joule Celsius Kelvin Fahrenheit ANSWER DOWNLOAD EXAMIANS APP
Physics Why does'nt the hydrogen atom emit X-rays? It is highly electropositive It is very small in size Its energy levels are very close to each other It has only one electron It is highly electropositive It is very small in size Its energy levels are very close to each other It has only one electron ANSWER DOWNLOAD EXAMIANS APP
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