Physics
Where should a boat compass be mounted?

Near magnet
Away from electrical wiring
All listed here
Near iron

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Physics
The sky appears blue because

In white light, the blue component dominates
It is actually blue
The atmosphere scatters blue colour more than the others
All colours interfere to produce blue

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Physics
Rain drops fall from great height. Which among the following statements is true regarding it?

They fall with same ultimate velocity
Their velocity increases and they fall with same velocity on the earth
They fall with that ultimate velocity, which are different for different droplets
Their velocity increases and they fall with different velocity on the earth

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