Physics
Consider the following statements :1. There is no net moment on a body which is in equilibrium.2. The momentum of a body is always conserved.3. The kinetic energy of an object is always conserved.Which of the statements given above is/are correct?

2 and 3 only
1 and 2 only
1 only
1, 2 and 3

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Physics
The blue colour of sky is due to

Reflection of sunlight
Refraction of sunlight
Scattering of shorter wavelengths of sunlight in the atmosphere
Scattering of longer wavelengths of sunlight in the atmosphere

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