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Physics

Physics
In AC circuits, AC meters measure

Mean square values
Rms values
Mean values
Peak values

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Physics
At what temperature (in Fahrenheit) pure water freezes?

32
48
37

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Physics
The radiation initially produced in fluorescent tube is

Ultraviolet
Infrared
Microwaves
X-rays

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Physics
Sir C.V. Raman was awarded Nobel Prize for his work connected with which of the following phenomenon of radiation?

Diffraction
Polarization
Scattering
Interference

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

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

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Physics
Working of safety fuses depends upon1. magnetic effect of the current2. chemical effect of the current3. magnitude of the current4. heating effect of the currentSelect the correct answer using the code given below.

1, 2 and 3 only
4 only
3 and 4 only
1, 2, 3 and 4

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