The diameter of the objective lens of the Hubble telescope is 4.3m (the diameter of its optical primary mirror is 2.4m). The reason for making such a large objective lens is________
A. The bigger the objective, the bigger the image we see
B. The objective lens of a reflecting telescope should be larger than that of a refracting telescope
C. The larger the objective lens, the more light can be focused, resulting in a brighter image
D. All the above statements are wrong
Answer:C
The diameter of the objective lens of the Hubble telescope is 4.3m (the diameter of its optical primary mirror is 2.4m). The reason for making such a large objective lens is________
A. The bigger the objective, the bigger the image we see B. The objective lens of a reflecting telescope should be larger than that of a refracting telescope C. The larger the objective lens, the more light can be focused, resulting in a brighter image D. All the above statements are wrong