Glass is made of which material?
Glass is made from heating of sand. To melt sand to make glass, the temperature needed is above 1800 deg celcius.
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An image formed by a plane mirror, that cannot be obtained on a screen is called _______.
Calculate the time period (in seconds) of a sound wave of wavelength 2m travelling with a speed of 250 m/s.
Thermohaline circulation is mainly due to
If the speed of an object moving along a straight line is constant, its motion is said to be _________.
Temperature of distant luminous bodies can be determined by
AV= constant, where A= area of cross-section and V= velocity of fluid. This equation is called _____.
Which type of radiation has the lowest penetrating ability?
In order of increasing penetration power, alpha particles have the lowest, then beta particles, then gamma rays.
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