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Physics

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

24
50
36
12

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Physics
In the atmosphere ultraviolet rays are absorbed by

Oxygen
Nitrogen
Ozone
Helium

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Physics
For a body moving with non-uniform velocity and uniform acceleration

Velocity – Time graph is nonlinear
Displacement – Time graph is non-linear
Displacement – Time graph is linear
Velocity – Time graph is linear

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Physics
Land is considered a resource because it

Costs little or nothing to use
Is always available to use
Is used to produce things
Requires labor to be useful

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Physics
The wavelength at which the peak of intensity of blackbody radiation occurs

Decreases with increase in temperature
Is the same at all temperatures
Does not follow any pattern as temperature changes
Increases with increase in temperature

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Physics
If lift is going up with acceleration, the apparent weight of a body is

May be more or less than true weight
Less than the true weight
More than the true weight
Equal to the true weight

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