Physics
Which of the following is a device designed to protect electrical devices from voltage spikes?

Voltage unloader
Heat protector
Surge protector
Current unloader

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Physics
Rainbows are produced when sunlight :

None of the given statements is correct.
Incident on rain drops hanging in the atmosphere is dispersed after suffering refraction
Incident on rain drops hanging in the atmosphere is dispersed after suffering refraction and internal reflection.
Incident on raindrops hanging in the atmosphere is dispresed after suffering reflection.

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