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Physics

Physics
Gamma rays can cause

Burning
Gene mutation
Sneezing
Fever

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Physics
The device which transfer the signal from low resistance region to high resistance region is

Diode
Transistor
Capacitor
Inductor

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Physics
Microphone is a device which transforms the

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

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Physics
A light ray travelling from denser to rarer medium at an angle of incidence more than critical angle of concerned media pair suffers.

Diffraction
Refraction
Reflection
Total internal reflection

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Physics
Which of the following is a compound machine?

Bicycle
Ramp
Knife
Screw

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Physics
Ventilators are provided near the ceiling of the room because

These provide cross ventilation in the room
These provide some sunlight in the room
The exhaled warmer air rises up and goes out
These do not look nice in the lower part

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