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Physics

Physics
Refractive Index of glass with respect to water is

44052
43924
43864
44082

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Physics
One nanometer is equal to ________ meters.

10 raised to the power (-12)
10 raised to the power (-9)
10 raised to the power (-3)
10 raised to the power (-6)

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Physics
Thermal expansion of materials arises from

Weak bonds
Strong bonds
Thermal vibrations
Asymmetry of potential energy curve

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Physics
In radio-communication, the signals emitted by transmitting antenna are reflected on

Ozonosphere
Troposphere
Stratosphere
Ionosphere

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Physics
Mercury is commonly used as a thermometric fluid rather than water because

mercury has greater visibility than water
specific heat of mercury is less than water
density of mercury is more than the water
specific heat of mercury is more than water

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Physics
A parallel-plate capacitor,with air in between the plates, has capacitance C. Now the space between the two plates of the capacitor is filled with a dielectric of dielectric constant 7. Then the value of the capacitance will become

14C
C/7
7C
C

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