Question

A fire screen produces sensation of cooling as :

• A. it allows both infrared and visible light but cuts off ultraviolet
• B. it allows infrared and cuts off shorter wavelengths
• C. it cuts off both visible light and infrared
• D. it allows only visible light and, cuts off infrared

Answer 1

Answer: (D)

it allows only visible light and, cuts off infrared

Answer 2

As. we know that infrared radiation produce heating. $A$ fire screen does not allow the infrared radiation but allows the visible light, therefore we can see the fire.