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Theinstrumentwhichusessound waves to measure the depth of oceans is sonar. Sound waves can travel much faster from one point to another. Sound waves are far more accurate for measuring these vast distances. Sonar may be used as a means of acoustic location and of measurement of the echo characteristics of "targets" in the water. Sonar mayalsobeusedinairforrobotnavigation,and SODAR is used for atmospheric investigations.
Who among the following developed the technology of under-ground nuclear explosion?
Inactive Nitrogen and Argon gases are usually used in electric bulbs in order to
The storage battery of a car has an emf of 15 V. If the internal resistance of the battery is 0.5 Ω, what is the maximum current that can be drawn from...
The order of wavelengths for ordinary light is:
How does the angle of minimum deviation of a glass prism of refractive index 1.5 change, if it is immersed in a liquid of refractive index 1.25?
Which of the following is the energy quantum of radiation?
The filament of a bulb is made up of?
The ozone hole that has been detected lies in the atmosphere above –
Which law explains why it is difficult to hammer a nail into a freely suspended wooden frame?
A sudden drop in barometric pressure indicates which of the following?
