Physics
What is the escape velocity of the rocket in the earth?

12.2 km/sec
11.2 km/sec
13.2 km/sec
10.2 km/sec

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Physics
Which one of the following is not a property of electromagnetic waves?

Oscillating electric field and magnetic field are perpendicular to each other.
Electromagnetic waves are transverse waves
Electromagnetic waves do not show interference and diffraction.
Electromagnetic waves do not require a medium to propagate.

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Physics
A dynamo is a device which

Creates mechanical energy
Creates electrical energy
Converts electrical energy into mechanical energy
Converts mechanical energy into electrical energy

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