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Physics

Physics
What is the effective resistance (in Ω) of two resistors 20 Ω and 30 Ω connected in parallel?

50
24
36
12

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Physics
Which one type of radiation has the longest wave length

X-ray
Infrared
Radio Wave
Ultraviolet

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Physics
In a refrigerator, the cooling system should always be

At the bottom
Can be anywhere
At the top
At the middle

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Physics
One billionth of a second is called

Nanosecond
Microsecond
Millisecond
Picoseconds

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Physics
Which one of the following has the highest value of specific heat?

Lead
Water
Copper
Glass

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Physics
The magnitude of buoyant force depends on the ________ of the fluid.

Temperature
Density
Mass
Volume

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