Question Type
Mutliple choice question
Question
What type of filter is commonly used to protect a lens?
Answer
Yes
a UV filter
No
an Infrared filter
No
a polarizer
No
a neutral density filter
Old Node ID
3296
Answer Json
{answers:[{answer:a UV filter,img:},{answer:an Infrared filter,img:},{answer:a polarizer,img:},{answer:a neutral density filter,img:}],correct:1}
Old Lesson reference ID
1225