Physics Why the needle of iron swims on water surface when it is kept gently ? It will remain under the water, when it will displace more water than its weight Due to its shape The density of needle is less than that of water Due to surface tension It will remain under the water, when it will displace more water than its weight Due to its shape The density of needle is less than that of water Due to surface tension ANSWER DOWNLOAD EXAMIANS APP
Physics What is the other name of Galileo's law of falling bodies? Newton's first law Newton's third law Newton's second law Law of motion Newton's first law Newton's third law Newton's second law Law of motion ANSWER DOWNLOAD EXAMIANS APP
Physics What is the SI unit of intensity of sound? Decibel Newton Tesla Heartz Decibel Newton Tesla Heartz ANSWER DOWNLOAD EXAMIANS APP
Physics A wire of copper having length I and area of cross-section A is taken and a current i is flown through it. The power dissipated in the wire is P. If we take an aluminium wire having same dimensions and pass the same current through it, the power dissipated will be > P P < P 2P > P P < P 2P ANSWER DOWNLOAD EXAMIANS APP
Physics Ice is packed in saw dust because Saw dust is poor conductor of heat. Saw dust will not get melted easily. Saw dust is a good conductor of heat. Saw dust does not stick to the ice. Saw dust is poor conductor of heat. Saw dust will not get melted easily. Saw dust is a good conductor of heat. Saw dust does not stick to the ice. ANSWER DOWNLOAD EXAMIANS APP
Physics The phenomenon of change in direction of light when it passes from one medium to another is called Refraction Reflection Propagation Dispersion Refraction Reflection Propagation Dispersion ANSWER DOWNLOAD EXAMIANS APP
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