
A12望遠鏡的功能
Quiz
•
Science
•
9th - 12th Grade
•
Practice Problem
•
Medium
光正 王
Used 37+ times
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14 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
望遠鏡主鏡(物鏡)的口徑會影響什麼功能?A解析力 B集光力 C影像放大力
只有A
只有B
只有C
A和B
B和C
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
望遠鏡主鏡(物鏡)的焦距會影響什麼功能?A解析力 B集光力 C影像放大力
只有A
只有B
只有C
A和B
B和C
3.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
甲及乙兩望遠鏡主鏡的口徑與焦距如表格所示,若使用相同的目鏡,請問哪個望遠鏡的解析力較佳?
甲
乙
一樣
4.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
甲及乙兩望遠鏡主鏡的口徑與焦距如表格所示,若使用相同的目鏡,請問哪個望遠鏡的影像放大力較佳?
甲
乙
一樣
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
甲及乙兩望遠鏡主鏡的口徑與焦距如表格所示,若使用口徑1cm、焦距2cm的目鏡,請問甲望遠鏡可使影像放大幾倍?
5
10
25
50
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
甲及乙兩望遠鏡主鏡的口徑與焦距如表格所示,若使用相同的目鏡,請問甲望遠鏡的集光力是乙望遠鏡的幾倍?
1/4
1/2
2
4
Answer explanation
甲口徑是乙的2倍,面積是乙的4倍,進光量與面積成正比,故甲集光力是乙的4倍
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
甲及乙兩望遠鏡主鏡的口徑與焦距如表格所示,若甲望遠鏡可見的極限星等為12等星,請問乙望遠鏡的極限星等大致為何?
9~10等星
10~11等星
11~12等星
12~13等星
Answer explanation
甲集光力是乙的4倍,故甲可比乙看到暗4倍的星體,而每差1星等,亮暗程度差2.5倍,故可推測乙可見極限星等會比甲小1~2等。
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