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a short focus concave lens
a long focus concave lens
a short focus convex lens
a long focus convex lens
A simple pendulum consists of a small metallic ball. This ball is called_.
A single fixed pulley is used to draw water from a well as
A single fixed pulley is used to draw water from a well because
A single phase full converter can operate in
A small drop of oil spreads over water because
A small gap is left at the joints of rails in a railway track to
A small mass is placed on a turntable that is rotating at 45 r.p.m. The acceleration of the mass is
A small quantity of water is placed in a small cavity made in a block of Ice at 0 degree centigrade. Which of the following will happen?
A small weight put on the pressure cooker increases the pressure of the steam because
A soap bubble shows colours when illuminated with white light. This is due to