1.

A telescope is used to view the moon. What is the angle subtended by the moon at the telescope, if the focal length of objective lens of the telescope is 12 cm and the size of the image of the moon formed by the objective is 2 cm ?

Answer»

A telescope is used to view the moon. What is the angle subtended by the moon at the telescope, if the focal length of objective lens of the telescope is 12 cm and the size of the image of the moon formed by the objective is 2 cm ?



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