Which glass is used to make spectacles?
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A sound wave has a frequency of 4 kHz and a wavelength of 40 cm. The time taken by the sound wave to travel a distance of 3.2 km is
At boiling point of liquids , its
Find the current (in A) when a charge of 500 Coulomb flows in 25 seconds.
Kelvin (K) is the unit of measurement of ________.
What is the unit of relative density?
In hydel power station, the motion produced in turbines is due to
In nuclear reactor, cadmium rods are used as which of the following?