Question 1
A concave mirror has a focal length of 20 cm. What is the magnification if the object's distance is 100 cm?
◦
1/2
◦
1/4
◦
−2
◦
4
◦
−1/4
Question 2
A concave mirror has a focal length of 20 cm. What is the magnification if the object and image distances are 10 cm and −20 cm respectively?
◦
1
◦
2
◦
1/2
◦
1/4
◦
−1/2