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# The Resolving Power of Telescope of Aperture 100 Cm for Light of Wavelength 5.5 X 10^-7 m - Physics

#### Question

The resolving power of telescope of aperture 100 cm for light of wavelength 5.5 x 10-7 m is _______________.

• 0.149 x 107

• 1.49 x 107

• 14.9 x 107

• 149 x 107

#### Solution

The resolving power of telescope of aperture 100 cm for light of wavelength 5.5 x 10-7 m is 0.149 x 107.

Aperture(diameter) of telescope D = 100cm = 1m
Wavelength of light λ = 5.5 x 10-7 m
Resolving power of telescope RP = D/[1.22λ]
⇒ RP = 1/[ 1.22 xx 5.5 xx 10^-7] = 0.149 xx 10^7

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