Physics
Which one among the following components is used as an amplifying device?

Transistor
Diode
Capacitor
Transformer

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Physics
Which one of the following statements with regard to Jet stream, an upper level tropospheric wave, is not correct?

Jet streams are typically continuous over long distances.
It follows the wave path near the tropopause at elevations of 8 km to 15 km.
In summer, the polar front jet achieves its maximum force.
It is narrow band of high-velocity wind.

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Physics
Siphon will fail to work if:

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