Which of the following binoculars would be best for observing very faint comets among the stars?
A) 12 × 50
B) 7 × 60
C) 8 × 50
D) 5 × 20
E) 10 × 35

Question

Quizplus · Accepted Answer

Binoculars with a larger objective lens diameter (the second number) allow more light to enter, making them better for observing faint objects like comets. The 7 × 60 binoculars have the largest objective lens diameter, allowing for the most light gathering capability among the options, making them the best choice for observing faint comets.

Which of the Following Binoculars Would Be Best for Observing