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Q. Light travels slowest in
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Q. Which color deviates least when passing through a Prism
Q. The focal length of a concave mirror with a radius of curvature of 20.0 cm is
Q. The phenomenon of total internal reflection may occur when light is passing from
Q. Pasteurisation of milk means-
Q. The role of alum in water purification is
Q. A single fixed pulley is used to draw water from a well because
Q. In which decade was the telegraph invented?
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