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Physics

Physics
Which determines the frequency of a sound wave?

Amplitude
Speed
Medium
Source

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Physics
The wave of theory of light is based on

The laws of reflection
Huyghens' principle
The laws of refraction
The inverse square law

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Physics
Coolis tube is used to produce

Radio waves
X-rays
Gama rays
Micro waves

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Physics
Hot water is poured simultaneously in four metallic tumblers painted outside with different points. After some time the water will be found to have cooled most in the tumbler painted.

Shining black
Shining white
Rough black
Rough white

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Physics
What is the phenomenon which established the transverse nature of light ?

Diffraction
Reflection
Interference
Polarisation

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Physics
A bucket of water is hung from a spring balance. A piece of iron is suspended in the water without touching the sides or touching the bottom of the bucket. The reading of the spring balance

Will decrease
Varies with the increase of depth of the immersion of the iron piece
Does not change
Will increase

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