The magnifying power of an astronomical telescope is 10 and the focal length of its eye-piece is 20 cm. The focal length of its object will be
a)	200 cm	b)	2 cm	c)	0.5 cm	d)	0.5cm

Question ID - 152367 | SaraNextGen Top Answer

The magnifying power of an astronomical telescope is 10 and the focal length of its eye-piece is 20 cm. The focal length of its object will be
a)	200 cm	b)	2 cm	c)	0.5 cm	d)	0.5cm