Physics A standing wave occurs when A wave reflects upon itself The speed of the wave is zero or near zero The amplitude of a wave exceeds its wavelength Two waves overlap A wave reflects upon itself The speed of the wave is zero or near zero The amplitude of a wave exceeds its wavelength Two waves overlap ANSWER DOWNLOAD EXAMIANS APP
Physics Which one is the unit of surface tension of a liquid Newton /m2 None of these Electron volt /cm2 Joule/ mm Newton /m2 None of these Electron volt /cm2 Joule/ mm 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
Physics If the velocity of a body is halved its kinetic energy ________ Becomes half Is also doubled Becomes 1/4 th Become 4 times Becomes half Is also doubled Becomes 1/4 th Become 4 times ANSWER DOWNLOAD EXAMIANS APP
Physics The frequency of ultrasound wave is typically Above 20 kHz Below 02 kHz Below 20 kHz Above 20,000 kHz Above 20 kHz Below 02 kHz Below 20 kHz Above 20,000 kHz ANSWER DOWNLOAD EXAMIANS APP
Physics Which one of the following reflects back more sunlight as compared to other three? Sand desert Land covered with fresh snow Prairie land Paddy crop land Sand desert Land covered with fresh snow Prairie land Paddy crop land ANSWER DOWNLOAD EXAMIANS APP
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