Which rule we should follow to protect eyes while watching TV or computer?
A. 20-20-20
B. 40-4-40
C. 10-10-10
D. 12-12-12
Answer:A
Which rule we should follow to protect eyes while watching TV or computer?
A. 20-20-20 B. 40-4-40 C. 10-10-10 D. 12-12-12