19. Ergonomics is an applied science concerned with designing and arranging things people use so that the people and things interact most efficiently and safely.
A. TRUE
B. FALSE
20. Using a laptop on your knees for long periods does not gives you back ache?
A. FALSE
B. TRUE
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Verified answer
Answer:
19.TRUE
20.TRUE
Explanation:
19.Ergonomics is indeed an applied science concerned with designing and arranging things people use so that the people and things interact most efficiently and safely.
20. Long periods of using a laptop on your knees can result in backache as the body is not in a proper ergonomic position for extended periods of time. Regular practice of this can lead to back pain and discomfort in the long run. The best way to use a laptop is by keeping it on a stable surface like a table or desk, with the screen at eye level, and using a comfortable chair. It is also important to take frequent breaks and stretch to avoid muscular soreness.