Physics Pipelines in cold countries often burst in winter, because Temperature of ice is less than that of water Pipelines contract in their volume Water freezes and expands in its volume Pipelines expand due to freezing Temperature of ice is less than that of water Pipelines contract in their volume Water freezes and expands in its volume Pipelines expand due to freezing ANSWER DOWNLOAD EXAMIANS APP
Physics Red is used as an emergency or danger signal as It is a striking colour It is scattered It has very high energy Its wavelength is the longest It is a striking colour It is scattered It has very high energy Its wavelength is the longest ANSWER DOWNLOAD EXAMIANS APP
Physics Which of these is true of all simple machines? None of these Both A & B Work input > work output These make work easier None of these Both A & B Work input > work output These make work easier ANSWER DOWNLOAD EXAMIANS APP
Physics Pitot tube is used to measure Static pressure Dynamic pressure Velocity at stagnation point Stagnation pressure Static pressure Dynamic pressure Velocity at stagnation point Stagnation pressure ANSWER DOWNLOAD EXAMIANS APP
Physics Lightning is produced when Similar charges of electricity rush towards each other and then get repelled Strong opposite charges in different clouds break down the resistance offered by the intervening air Clouds strike against impurities in air and the friction burns up these impurities Water vapour produces electricity in the clouds Similar charges of electricity rush towards each other and then get repelled Strong opposite charges in different clouds break down the resistance offered by the intervening air Clouds strike against impurities in air and the friction burns up these impurities Water vapour produces electricity in the clouds ANSWER DOWNLOAD EXAMIANS APP
Physics A man standing at the top of a tower has two spheres A and B. He drops sphere A downwards and throws sphere B horizontally at the same time. Which of the following is correct ? B will reach the ground first. A will reach the ground first. The question is incomplete because the masses of the spheres are not given. Both the spheres will reach the ground simultaneously. B will reach the ground first. A will reach the ground first. The question is incomplete because the masses of the spheres are not given. Both the spheres will reach the ground simultaneously. ANSWER DOWNLOAD EXAMIANS APP
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