# 1pilihanWhich of the following wavelengths does infrared radiation fall between?400nm-700nm750nm-400000nm200nm-400nm10nm-400nm
# 2pilihanWhat is the primary natural source of infrared radiation?The MoonThe SunEarth's CoreArtificial Heaters
# 3pilihanWhich type of infrared generator produces both light and heat?Non-luminous generatorLuminous generatorSolar generatorWave generator
# 4pilihanWhat effect does the Cosine Law have on radiation absorption?Increases absorption at larger anglesDecreases absorption at larger anglesHas no effectDoubles absorption at all angles
# 5pilihanWhich physiological effect occurs due to the application of infrared radiation?Decreased metabolismVasodilatationIncreased blood pressureMuscle contraction
# 6pilihanWhich of the following is a contraindication for infrared radiation therapy?Sub acute inflammationFeverOsteoarthritisMuscle spasm
# 7pilihanWhat safety measure should be taken to protect the eyes during infrared therapy?Use of sunscreenMoist cotton packs or gogglesApplying ice packsWearing hats
# 8pilihanWhat is a potential hazard of infrared radiation therapy?Increased intelligenceBurns or blistersDecreased visionHair growth
# 9pilihanWhich law explains the relationship between the intensity of infrared rays and distance?Stefan-Boltzman LawInverse Square LawArndt-Schulz PrincipleNewton's Law
# 10pilihanWhat is the recommended lamp positioning distance for infrared therapy?10-20 cm40-90 cm100-150 cm5-10 cm