Physics Friction is caused by the ________ on the two surfaces in contact. Smoothness Densities Irregularities Gaps Smoothness Densities Irregularities Gaps ANSWER DOWNLOAD EXAMIANS APP
Physics Which of these is true of all simple machines? None of these Work input > work output These make work easier Both A & B None of these Work input > work output These make work easier Both A & B ANSWER DOWNLOAD EXAMIANS APP
Physics A gap is left between two rails of a railway track to accommodate...... of the metal. Areal expansion Linear expansion Apparent expansion Volume expansion Areal expansion Linear expansion Apparent expansion Volume expansion ANSWER DOWNLOAD EXAMIANS APP
Physics Frictional force acts in All the directions The same direction as the motion Upward direction The opposite direction of the motion All the directions The same direction as the motion Upward direction The opposite direction of the motion ANSWER DOWNLOAD EXAMIANS APP
Physics Who gave black hole theory? None of these Stephen Hawking Isaac Newton Albert Einstein None of these Stephen Hawking Isaac Newton Albert Einstein ANSWER DOWNLOAD EXAMIANS APP
Physics When hot liquid is poured into a thick glass tumbler, it cracks because glass : Has high temperature coefficient of expansion Has a very low specific heat Is a bad conductor of heat so only inner surface expands Has low temperature coefficient of expansion Has high temperature coefficient of expansion Has a very low specific heat Is a bad conductor of heat so only inner surface expands Has low temperature coefficient of expansion ANSWER DOWNLOAD EXAMIANS APP
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