Radar
Sonar
Altimeter
Venturimeter
The insulation resistance of cables, transformers etc is measured by following instrument
The intensity of sound at a point is _ its distance from the source
The intensity ratio of waves is 25 : 9. What is the ratio of their amplitudes?
The internal resistance of all milliammeter must be very low for
The internal resistance of the voltmeter must be very high in order to have
The ISI mark on an electrical appliance ensures that the _.
The isotope of Uranium used in atomic reactors is
The isotope used for the production of atomic energy is
The known forces of nature can be divided into four classes, viz, gravity, electromagnetism, weak nuclear force and strong nuclear force. With reference to them, which one of the following statements is not right?
The Laser is a beam of radiations which are
