Question
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Answer (Detailed Solution Below)
Option 1 : clear or yellow UV-safety goggles / पारदर्शी या पीले UV-सुरक्षा चश्मे
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Detailed Solution
सही उत्तर clear or yellow UV-safety goggles / पारदर्शी या पीले UV-सुरक्षा चश्मे है।
Key Points
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prepsnap.in • Part -AQuestion:
Dried semen stains are commonly located with longwave UV around 365 nm viewed through _____ / सूखे वीर्य के धब्बे सामान्यतः 365 nm के आसपास लॉन्गवेव UV से _____ लगाकर खोजे जाते हैं।
1.
clear or yellow UV-safety goggles / पारदर्शी या पीले UV-सुरक्षा चश्मे
2.
orange barrier goggles / नारंगी बैरियर चश्मे
3.
red barrier goggles / लाल बैरियर चश्मे
4.
ordinary sunglasses / साधारण धूप-चश्मे
Correct Answer: clear or yellow UV-safety goggles / पारदर्शी या पीले UV-सुरक्षा चश्मे
UV fluorescence needs no coloured barrier filter for viewing — the stain's bluish-white glow is seen directly. Clear or yellow goggles are worn only to block UV from reaching the eyes, since intense UV injures the cornea.
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