Physics
Which of the following pair is Incorrect?I. Parsec - DistanceII. Barrel - LiquidIII. Light year - Time

Only I and III
Only II
All are correct
Only III

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Physics
Energy in reflected light :

Becomes maximum for angle of incidence equal to 45°
Increases with the increase in angle
Decreases with the increase in angle of incidence
Does not depends on the angle of incidence

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Physics
To resolve an object in an electron microscope,

The wavelength of the electrons must be greater than the diameter of the object.
None of these
Both A & B
The wavelength of the electrons must be close to the diameter of the object

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