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Physics

Physics
Permissible noise level at Residential area during night time is :

80 dB (A)
75 dB (A)
45 dB (A)
55 dB (A)

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Physics
A photostat machine works on

Electromagnetic image making
Electrostatic image making
Thermal image making
Magnetic image making

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Physics
The earth-wire of a cable is connected to

The filament of the appliance
Short circuitry of the appliance
The outer metallic body of the appliance
The fuse of the appliance

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Physics
After reflection from a plane mirror the word will look like.

ECNALUBMA
AWBULANCE
AMBULA CE
AMBULANCE

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Physics
The reverse effect of X–ray emission is

Raman effect
Compton effect
Photoelectric
Zeeman effect

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Physics
During washing of clothes, we use indigo due to its

High glorious nature
Better cleaning action
Proper pigmental composition
Very low cost

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