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A person standing on a railway platform listens to the whistles of arriving and departing trains. The whistle heard is
A person wears spectates with concave lenses. It means that normally (when not using glasses), the image of distant objects is focussed in his eyes
A photo-electric cell converts
A photostat machine works on
A piece of ice is dropped in a vesel containing kerosene. When ice melts, the level of kerosene will
A piece of ice is floating in water kept in a beaker. When all the ice melts the level of water will
A piece of Ice was tied with a string to a water bucket‘s bottom, and the water bucket was filled with water with ice fully submerged in it. What would be the impact on the level of water when the ice melts away completely?
A piece of paper & a cricket ball are dropped from the same height. Under Which among the given conditions do both reach the surface simultaneously
A pilot has to release the bomb to hit a target
A plane glass slab is placed over various coloured letters, The letter which appears least raised is
