Resistance switching is normally employed in
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Which of the following waves cannot be polarised?
A broadcasting station transmits waves with a frequency of 71 x 104 Hz and a speed of 3 x 108 m/s. The wavelength of the wave is
In hydel power station, the motion produced in turbines is due to
A car accelerates uniformly from 18 kmph to 72 kmph in 5 s. The acceleration of the car (in m/sq.s) is:
When a number of resistors are connected in series in a circuit, the value of current:
Which instrument is used for measuring humidity of atmosphere?
If speed of rotation of the earth increases, the weight of the body