Physics Why the needle of iron swims on water surface when it is kept gently ? Due to surface tension Due to its shape It will remain under the water, when it will displace more water than its weight The density of needle is less than that of water Due to surface tension Due to its shape It will remain under the water, when it will displace more water than its weight The density of needle is less than that of water ANSWER DOWNLOAD EXAMIANS APP
Physics Rolling friction is caused by ________ Buoyancy Gravity Non-elastic effects Power dissipation Buoyancy Gravity Non-elastic effects Power dissipation ANSWER DOWNLOAD EXAMIANS APP
Physics The width of depletion layer of a P-N junction Decreases with light doping Is independent of applied voltage Increases with heavy doping Is increased under reverse bias Decreases with light doping Is independent of applied voltage Increases with heavy doping Is increased under reverse bias ANSWER DOWNLOAD EXAMIANS APP
Physics Centrifugal force increases with Humidity Acceleration Pressure Temperature Humidity Acceleration Pressure Temperature ANSWER DOWNLOAD EXAMIANS APP
Physics Two metallic plate of equal thickness and coefficient thermal conductivity K1 and K2 put together face to face. A common plate is constructed. What is equivalent K? K1k2/k1+k2 2k1k2/k1+k2 None K1+k2/k1k2 K1k2/k1+k2 2k1k2/k1+k2 None K1+k2/k1k2 ANSWER DOWNLOAD EXAMIANS APP
Physics A wire carrying current is Neutral Positively charged Charged with a type depending upon current strength Negatively charged Neutral Positively charged Charged with a type depending upon current strength Negatively charged ANSWER DOWNLOAD EXAMIANS APP
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