Physics A standing wave occurs when The speed of the wave is zero or near zero A wave reflects upon itself Two waves overlap The amplitude of a wave exceeds its wavelength The speed of the wave is zero or near zero A wave reflects upon itself Two waves overlap The amplitude of a wave exceeds its wavelength ANSWER DOWNLOAD EXAMIANS APP
Physics Why does'nt the hydrogen atom emit X-rays? Its energy levels are very close to each other It is very small in size It has only one electron It is highly electropositive Its energy levels are very close to each other It is very small in size It has only one electron It is highly electropositive ANSWER DOWNLOAD EXAMIANS APP
Physics Friction can be reduced by changing from Sliding to Rolling Rolling to Sliding Dynamic to Static Static to Dynamic Sliding to Rolling Rolling to Sliding Dynamic to Static Static to Dynamic ANSWER DOWNLOAD EXAMIANS APP
Physics Damp clothes are dried in spin dryers by the action of Centripetal forces Centrifugal forces Non central forces Central forces Centripetal forces Centrifugal forces Non central forces Central forces ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following is not true about X-rays? Can affect photographic plates Have low penetrating power Can be reflected or refracted Travel with the speed of light Can affect photographic plates Have low penetrating power Can be reflected or refracted Travel with the speed of light ANSWER DOWNLOAD EXAMIANS APP
Physics For which of the following substances, the resistance decreases with increase in temperature? Nichrome Copper Pure silicon Platinum Nichrome Copper Pure silicon Platinum ANSWER DOWNLOAD EXAMIANS APP
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