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The list price of a frock is Rs 220. A discount of 20% is announced on sales.What is the amount of discount on it and its sale price.
A photographic flash unit consists of a xenon-filled tube. It gives a flash of average power 200 W for 0.04s. The flash is due to discharge of a fully charged capacitor of 40muF . The voltage to which it is charged before a flash is given by the unit is
A photographic flash unit consists of a xenon-filled tube. It givers a flash of average power 2000 W for 0.04 s. The flash is due to discharge of a fully charged capacitor of 40 muF The valtage to which it is charged before a flash is given by The unit is .
