013) student determines the focal length
of a device X by using the
image of a distant object on a
scriin placul 20 cm from the serie
on the same sedle as the object
Mame the device and what is
its focal length
Answers
Answered by
2
Answer: 20 cm , concave mirror
Explanation: object is distant, all light rays will meet at focus. Image is formed on screen on same side then it is concave mirror
Answered by
0
Answer:
it is concave mirror of focal length 10cm
Explanation:
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