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Physics

Physics
Which of the following is an example for cantilever beam?

See-saw
Common balance
Bridge
Diving board

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Physics
If an ordinary glass tube and a glass capillary tube are both dipped in a beaker of water, water rises in

Only the capillary tube
Both
Neither
Only the glass tube

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Physics
In sunlight a rose appears red. In green light, the same rose appears

Black
Red
Yellow
Green

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Physics
Gamma rays can cause

Burning
Gene mutation
Sneezing
Fever

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Physics
Heavy water is used in nuclear reactor to

Increase speed of neutron
Slow down neutron
Absorb neutron
Increase temperature

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Physics
A copper wire of radius r and length l has a resistance of R. A second copper wire with radius 2r and length l is taken and the two wires are joined in a parallel combination. The resultant resistance of the parallel combination of the two wires will be

4 R/5
R/5
5 R
5 R/4

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