Physics
What is the reason for formation of Mirage in desert?

Refraction of light
Total internal reflection of light
Both Refraction and Total internal reflection of light
Reflection of light

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Physics
Analog synthesis refers to a technology based on

Representing data in terms of measurable physical quantities.
Interfacing synthesizer equipment.
Placing brief digital recordings of live sounds under the control of a synthesizer keyboard.
Representing physical quantities as numbers.

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