An astronomical telescope consists an objective of focal lenght 100cm and an eyepiece of focal lenght 8cm. calculate the angular magnification of the telescope and also determine the distance between the two lenses.
To calculate the angular magnification of the telescope, we can use the formula:
Magnification = (Focal Length of Objective)/(Focal Length of Eyepiece)
In this case, the focal length of the objective lens is 100 cm, and the focal length of the eyepiece is 8 cm.
Substituting the values into the formula:
Magnification = 100 cm/8 cm
Magnification = 12.5
So, the angular magnification of the telescope is 12.5.
To determine the distance between the two lenses, we can use the formula:
Distance between lenses = (Focal Length of Objective) + (Focal Length of Eyepiece)
Substituting the values into the formula:
Distance between lenses = 100 cm + 8 cm
Distance between lenses = 108 cm
Therefore, the distance between the two lenses in the astronomical telescope is 108 cm.