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Physics

Physics
Heat transfer by conduction occurs when molecules

Combine
Heated
Collide
None of these

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Physics
What is the full form of "RADAR" ?

Radio Device and Ranging
Region Device and Ranging
Radio Detect and Rangs
Radio Detecting and Ranging

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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?

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

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Physics
Which of the following is an insulator?

Mercury
Germanium
Glass
Carbon

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Physics
At constant pressure, the volume of a fixed mass of a gas is directly proportional to its absolute temperature. It is the statement of

Charle's Law
Avogadro's Law
Gay-Lussac's Law
Boyle's Law

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Physics
The force of friction between two surfaces will increase if:

Irregularities on both the surfaces are removed
Air gap is created between the two surfaces
A layer of lubricant is kept between the two surfaces
The two surfaces are pressed harder

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