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Physics

Physics
What is the minimum distance (in metres) required to hear an echo?

10
13
17
21

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Physics
The freezing point of fresh water is ________ .

0°C
3°C
4°C
5°C

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Physics
On the Kelvin scale, the melting point of ice is

100K
373K
273K
0 K

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Physics
A liquid disturbed by stirring comes to rest due to

Surface tension
Viscosity
Density
Centripetal force

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Physics
A device used for converting a.c. into d.c. is called

Induction coil
Rectifier
Transformer
Dynamo

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Physics
Light scattering takes place in

Acidic solutions
Electrolyte solutions
Basic solutions
Colloidal solutions

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