Question Type
Mutliple choice question
Question
This type of lens has a variable focal length
Answer
No
prime lens
Yes
zoom lens
No
fixed lens
No
removable lens
Old Node ID
3401
Answer Json
{answers:[{answer:prime lens,img:},{answer:zoom lens,img:},{answer:fixed lens,img:},{answer:removable lens,img:}],correct:2}
Old Lesson reference ID
1222