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STD 12 - 9. Ray optics abd optical instruments — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 12 - 9. Ray optics abd optical instruments4 Marks
Question
At Kavalur in India, the astronomers using a telescope whose objective had a diameter of one meter started using a telescope of diameter $2.54 \,m$. This resulted in
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Answer

(a) As R.P. $\propto$ d, it will increase by $2-54$ times for same $\lambda$

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