Class 10 Science Light Reflection MCQ 7. A concave mirror of radius 30 cm is placed in water. It’s focal length in air and water differ by
A. 15
B. 20
C. 30
D. 0
Answer:D
Class 10 Science Light Reflection MCQ 7. A concave mirror of radius 30 cm is placed in water. It’s focal length in air and water differ by
A. 15 B. 20 C. 30 D. 0