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A solid needle placed horizontally on the surface of the water floats due to
A sound wave having wavelength λ from stationary waves after reflection from surface . the distance between two consecutive nodes is
A sphere rolls down on two inclined planes of different angles but same height, it does so
A spherical ball made of steel when dropped in mercury container will
A sprayer works on the principle expounded by
A spring balance A and a beam balance B are used to weigh an object at different points on Earth. It will be observed that
A standing wave occurs when
A star appears twinkling in the sky because of
A star seems twinkling in the sky as of
A stone floor feels cold to the bare feet but a carpet on the same floor feels warm. This is because
