Physics
A disk and a sphere of same radius but different masses roll on two inclined planes of the same altitude and length. Which one of the two objects gets to the bottom of the plane first ?

Both reach at the same time
Depends on their masses
Disk
Sphere

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Physics
What is a neuron ?

Basic unit of nervous system
Particle released during radioactivity
Basic unit of energy
The anti-particle of neutron

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