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Physics

Physics
The speed of sound travel fastest through

Solid
Gas
None of these
Liquid

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Physics
0°K is equivalent to

0°C
273°C
– 273°C
100°C

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Physics
Find the power of a convex lens if the image formed is at a distance of 16 cm from the lens when the object is placed on the other side of the lens at 20 cm from the optical centre?

3.75 diopters
-11.25 diopters
11.25 diopters
-3.75 diopters

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Physics
Kirchoff's Voltage Law is known as

Both
Conservation Energy
Conservation of Charge
None of these

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Physics
The force that generates wind is

Pressure gradient force
Coriolis force
Gravity force
Centrifugal force

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Physics
Sun appears red in colour at sunrise and sunset due to

That sun comes out of the mountains
Red light having longer wave length scatters away
That all other colours scatter away except red
The fact that sun emits only red colour at that time

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