NDA Government Jobs Exams

A current I flows through a potential difference V in an electrical circuit containing a resistance R. The
product of V and I, i.e., VI may be understood as -
(a) resistance R (b) heat generated by the circuit
(c) thermal power radiated by the circuit (d) rate of change of resistance

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NDA Other Question
An optician prescribes a power = – 0.5 dioptre. The corresponding lens must be a -
(a) convex lens of focal length 2 m (b) convex lens of focal length 50 cm
(c) concave lens of focal length 2 m (d) concave lens of focal length 50 cm When the winds blow from all sides to the central low in an anticlockwise direction, then this phenomenon is
known as -
(a) anti-tropical cyclones of southern hemisphere
(b) temperate cyclones of northern hemisphere
(c) tropical cyclones of northern hemisphere
(d) tropical cyclones of southern hemisphere