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Physics

Physics
The paramagnetic theory of magnetism applies to

Platinum
Iron
Nickel
Mercury

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Physics
Indicate the correct arrangement for electromagnetic radiation in order of their increasing wavelength.

X - rays, infrared, visible, microwave
Microwave, infrared, visible. X-rays
X -rays, visible, infrared, microwave
Visible, infrared, microwave, X-rays

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Physics
The density of the liquid when heated

May increase of decrease depending on pressure
Increases
Decreases
Does not change

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Physics
Microphone is a device which transforms the

Light signal into sound signal
Sound signal into light signal
Current signal into sound signal
Sound signal into current signal

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Physics
A parallel-plate capacitor of capacitance C1 is made using two gold plates. Another parallel-plate capacitor of capacitance C2 is made using two aluminium plates with same plate separation, and all the four plates are of same area. If rg and ra are respectively the electrical resistivities of gold and aluminium, then which one of the following relations is correct?

C1 = C2
C1pa = C2pg
C2>C1
C1>C2

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Physics
The density of a gas is maximum at

Low temperature, high pressure
Low temperature, low pressure
High temperature, low pressure
High temperature, high pressure

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