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Direct current to Alternating current
Alternating current to Direct current
high voltage to low voltage
low voltage to high voltage
Sound waves in air are
Magnetism at the centre of a bar magnet is
It is more difficult to walk on a sandy road than on a concrete road because
Of the following properties of a wave, the one that is independent of the other is its
Lux is the SI unit of
On a rainy day, small oil films on water show brilliant colours. This is due to
Point A is at a lower electrical potential than point B. An electron between them on the line joining them will
Materials for rain-proof coats and tents owe their water-proof properties to
RADAR is used for
Sound of frequency below 20 Hz is called