In arc welding, eyes need to be protected against:
Intense glare
Sparks
Infrared rays only
Both infrared rays and ultra-violet
rays
Both infrared rays and ultra-violet
rays
Welding arcs and flames emit intense
visible, ultraviolet, and infrared radiation. In arc welding, eyes need to
be protected against both infrared rays and ultra-violet rays.
Hence, the correct option is (D).
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