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Physics

Physics
What is the unit of the physical quantity "Inductance"?

Henry
Farad
Weber
Tesla

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Physics
On which of the following techniques photostate machine works ?

Thermal Image—Making
Magnetic Image—Making
Electrostatic Image—Making
Electromagnetic Image— Making

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Physics
An oil drop spreads over water because

Oil is lighter than water
water has a higher surface tension
Oil does not mix with water
Oil is more viscous

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Physics
Stars in the sky appear to twinkle due to

Multiple diminishing brightness
A series of refractions
A series of reflections
A surface tension phenomenon

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Physics
Two metallic wires made from copper have same length but the radius of wire 1 is half of that of wire 2. The resistance of wire 1 is R. If both the wires are joined together in series, the total resistance becomes

R/2
5R/4
2R
3R/4

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Physics
Fuse wire is made of an alloy of

Tin and Lead
Tin and Copper
Copper and Silver
Lead and Copper

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