Physics If there is a circular hole in a metal plate, what happens to the radius of the hole when the plate is heated? Increases Unchanged Depends upon the metal Decreases Increases Unchanged Depends upon the metal Decreases ANSWER DOWNLOAD EXAMIANS APP
Physics Rain drops acquire spherical shape due to Elasticity Friction Viscosity Surface tension Elasticity Friction Viscosity Surface tension ANSWER DOWNLOAD EXAMIANS APP
Physics Quality of transmission depends upon Neither A nor B Nature of signal only Both (A) and (B) Nature of medium only Neither A nor B Nature of signal only Both (A) and (B) Nature of medium only ANSWER DOWNLOAD EXAMIANS APP
Physics Metals are good conductors of electricity because: They have high melting point. The atoms are lightly packed. All of these They contain free electrons. They have high melting point. The atoms are lightly packed. All of these They contain free electrons. ANSWER DOWNLOAD EXAMIANS APP
Physics A parachute descends slowly whereas a stone dropped from the same height falls rapidly, because None of these Special mechanisms are present in parachute A parachute has a larger surface area and air resistance is more Stone is heavier than parachute None of these Special mechanisms are present in parachute A parachute has a larger surface area and air resistance is more Stone is heavier than parachute 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 K1+k2/k1k2 None 2k1k2/k1+k2 K1k2/k1+k2 K1+k2/k1k2 None 2k1k2/k1+k2 ANSWER DOWNLOAD EXAMIANS APP
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