Physics
Two electric bulbs marked 25W – 220V and 100W – 220V are connected in series to a 440Vsupply. Which of the bulbs will fuse?

Both
25 W
100 W
Neither

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Physics
Skating on ice is possible because

Ice is cold
The pressure on the ice due to skate melts the ice by lowering its melting point forming a thin film of water
The pressure on the ice due to skate raises its melting point
The surface of ice is smooth

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Physics
The earth is a

Bad absorber and bad radiator of heat
Good reflector of heat
Non-absorber of heat
Good absorber and good radiator of heat

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