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Physics

Physics
The substance which conducts current in the solid state is

Sodium chloride
Diamond
Graphite
Iodine

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Physics
The sounds having a frequency of 20 Hertz to 20,000 Hertz are known as

Ultrasonics
Megasonics
Audible sounds
Infrasonics

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Physics
Rate of change of displacement is known as ________

Distance
Velocity
Acceleration
Speed

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Physics
For photoelectric effect to take place, the metal used as the cathode should have ________

Low resistance
Low melting point
High melting point
Low work function

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Physics
Which one type of radiation has the longest wave length

Radio Wave
X-ray
Ultraviolet
Infrared

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Physics
Light from Sun reaches Earth in approximately

3 minutes
12 minutes
8 minutes
10 minutes

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