Physics
What is the full form of "RADAR" ?

Radio Device and Ranging
Radio Detecting and Ranging
Region Device and Ranging
Radio Detect and Rangs

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Physics
Siphon will fail to work if:

The level of the liquid in the two vessels are at the same height.
Both its limbs are of unequal length.
The densities of the liquid in the two vessels are equal.
The temperature of the liquids in the two vessels are the same.

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Physics
Which statement best describes an igneous intrusion?

Igneous intrusion for when ice crystals splash into lava
Magma is exported to an open area and forms iron
Magma is injected into surrounding rock forming an igneous intrusive
Magma explodes to the surface and forms a smooth outer layer of rock

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