Physics
Find the power of a convex lens if the image formed is at a distance of 16 cm from the lens when the object is placed on the other side of the lens at 20 cm from the optical centre?

3.75 diopters
-11.25 diopters
11.25 diopters
-3.75 diopters

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Physics
Air moves from the region where the air ________

Humidity is low to the region where the humidity is high
Pressure is low to the region where the pressure is high
Humidity is high to the region where the humidity is low
Pressure is high to the region where the pressure is low

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