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When a beam of light is used to determin...

When a beam of light is used to determine the position of an object, the maximum accuracy is achieved if the light is

A

(a) polarised

B

(b) of longer wavelength

C

(c) of shorter wavelength

D

(d) of high intensity

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The correct Answer is:
C
When a beam of light is used to determine the position of an object, the maximum accuracy is achieved if the light is of shorter wavelength, because
`Ac curacyprop(1)/(Wavel eng th)`
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