Ergonomics: definition, need and benefits

Very small letters can strain the eyes while viewing. Exam tip: remember font size in visual comfort.

Foot support helps maintain stable sitting posture. Exam tip: remember foot support along with chair.

Continuous bending can strain the back and neck. Exam tip: link work surface height with posture.

Correct correction cannot be decided without understanding work and worker needs. Exam tip: remember task-person fit.

Keeping heavy items at safe height reduces injury risk. Exam tip: check weight and height together in storage.

Poor air flow can increase discomfort and fatigue. Exam tip: include air and temperature in work environment.

A high work level can put unnecessary strain on shoulders. Exam tip: link shoulder strain with height.

Ergonomics is based on human-centred work arrangement. Exam tip: treat human ability and comfort as key points.

Balance of the whole workstation is needed, not only the chair. Exam tip: view the workstation as a complete arrangement.

Proper support reduces body strain in long standing work. Exam tip: remember support in standing work.

Breaks and task change reduce muscle strain in repeated movements. Exam tip: treat repetition as a risk factor.

The direct answer is option A: efficiency in searching will reduce. Ergonomics is not only about physical posture; it also includes arranging the workplace so that tasks require less time, confusion and unnecessary movement. Step by step: nearby files are physically easy to reach; without order, the worker must search through them; searching takes extra time and attention; confusion may cause delay or mistakes; therefore the benefit of efficient retrieval is reduced. Option A is correct because it directly describes the lost organisational benefit. Option B is wrong because file order does not by itself determine whether a chair or workstation gives back support. Option C is unrelated because file arrangement does not normally control air flow. Option D is unrelated because floor grip depends on flooring and footwear, not document order. The best workplace combines proximity with a clear filing system. Memory cue: near plus organised means quick retrieval; near but disorganised still wastes time.

Glare is unwanted bright light reflected from a screen into the eyes. It can make letters difficult to see and may cause eye discomfort, squinting, or tiredness during computer work. A useful ergonomic solution is to arrange the screen and the light source so that sunlight or a lamp does not reflect directly toward the user. The brightness and direction of light should support clear vision.

Option A is correct because changing the direction of the screen and light can reduce reflections and glare. Removing the chair does not solve a lighting problem, and raising the keyboard does not change the light falling on the screen. Blocking a pathway is unrelated and may create a safety risk. Good workplace design controls glare while keeping the work area safe.

Lifting a heavy object kept far increases strain on back and shoulders. Exam tip: check load, distance, and bending together.

Repeated pain can indicate a problem in work arrangement. Exam tip: use complaints as a basis for assessment.

Tool weight and grip directly affect safety and comfort. Exam tip: remember human comfort in tool selection.

Adjustable height helps work according to different physical needs. Exam tip: remember user-based adjustment.

Healthy work arrangement can reduce absence due to illness and injury. Exam tip: link health benefits with attendance.

The direct answer is D: tripping and falling. A dry floor removes the special danger of slipping on liquid, but scattered objects in a pathway create a physical obstacle. A person may not see the object, may catch a foot on it, lose balance, and fall. Option A, temperature increasing, is unrelated because scattered objects do not heat the workplace. Option B, lighting reducing, is also unrelated; objects may make movement unsafe, but they do not themselves reduce lighting. Option C, air stopping, has no connection with articles lying on the floor. Option D is correct because a clear, unobstructed pathway is a basic safety requirement. The correct safety action is to remove, store, or arrange the objects and keep routes clear. Remember: dry does not always mean safe; check both the floor surface and the pathway.

Reduced fatigue can improve attention and work quality. Exam tip: understand the link between comfort and productivity.

Computer work needs combined adjustment of several parts. Exam tip: view the workstation as a whole.

Uncomfortable grip increases strain on hand and wrist. Exam tip: connect handle design with ergonomics.

Back support and breaks reduce effects of long sitting. Exam tip: remember support and breaks together.

Even a light object can strain the shoulder if lifted overhead repeatedly. Exam tip: check repetition and height with weight.

Worker feedback helps identify real workplace problems. Exam tip: include feedback in assessment.