Alternate freezing and thawing often leads to ______.
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The property of metal by which it can be drawn into wires is called _____________.
A person lifts luggage of 20 kg from the ground and puts it on his head 2 in above the ground. Calculate the work done by him. (g = l0 )
Intensity of any wave is proportional to which of the following?
A permanent magnet can affect
A permanent magnet can affect both magnets and electromagnets.
A permanent magnet has natural magnetic properties while a temporal magnet is created by artificial means. Permanent magnets do not lose their magnetic ability.
The reflector of a search light is a :
A man standing close to the platform at a railway station experiences a pulling force towards a fast moving train because of __________ .
Soap bubble attains spherical shape due to ______.