The lens referred to is the objective lens of the telescope used.)
A. use a large lens and blue light
B. use a large lens and red light
C. use a small lens and blue light
D. use a small lens and red light
Answer:A
The lens referred to is the objective lens of the telescope used.)
A. use a large lens and blue light B. use a large lens and red light C. use a small lens and blue light D. use a small lens and red light