In the flashlight experiment described, why was it necessary to cover the flashlight with black plastic containing a small pinhole?
1 )
To protect the flashlight from overheating
To create a thin, focused ray of light for accurate angle measurement
3 )
To prevent the light from reflecting off surrounding objects
4 )
To reduce the brightness of the light to protect observers’ eyes
تحلیل ویدئویی تست
منتظریم اولین نفر تحلیلش کنه!
پرسش و پاسخ های مشابه
سوال کنید یا به سوالات دیگران پاسخ دهید ...