B. The focal lengths of the objective and the eyepiece of an astronomical telescope are 45cm and 6cm respectively. Calculate the magnifying power and the length of the telescope when the final image is formed at (i) infinity (ii) the near point(25cm)

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B. The focal lengths of the objective and the eyepiece of an astronomical telescope are 45cm
and 6cm respectively. Calculate the magnifying power and the length of the telescope when
the final image is formed at (i) infinity (ii) the near point(25cm)
Transcribed Image Text:B. The focal lengths of the objective and the eyepiece of an astronomical telescope are 45cm and 6cm respectively. Calculate the magnifying power and the length of the telescope when the final image is formed at (i) infinity (ii) the near point(25cm)
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