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Physics

Physics
Which of the following is an insulator?

Germanium
Mercury
Glass
Carbon

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Physics
The electrical domestic tube light gives white fluorescent light because of

Heavy current
Vacuum inside the tube
Falling of ultra violet rays on the white inner coating of the tube
Colision between molecules of filled gas under electric current

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Physics
Why the needle of iron swims on water surface when it is kept gently ?

It will remain under the water, when it will displace more water than its weight
Due to its shape
The density of needle is less than that of water
Due to surface tension

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Physics
What is the wavelength of visible spectrum ?

1300 A°–3000 A°
3900 A° – 7600 A°
7800 A° – 8000 A°
8500 A° – 9800 A°

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Physics
The mass of a star is two times the mass of the Sun. How it will come to an end ?

Red Giant
White Dwarf
Neutron Star
Black hole

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Physics
What factors contribute to global winds?

All of these
Uneven warming of the earth by the sun
Coriolis Effect
Convection Cells

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MORE MCQ ON Physics

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