Multiple choice

Which of the following statements is not true about infrared radiations?

  1. All hot bodies emit infrared radiations.

  2. They heat up any body that comes in their path.

  3. They are absorbed by the ozone layer.

  4. Heat from the sun is transferred in the form of infrared radiations.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

There are some properties of infrared radiations such as (i)         Heat from the sun is transferred in the form of infrared radiations. (ii)        All hot bodies emit infrared radiations. (iii)       They heat up any body that comes in their path. (iv)       One-third of sunrays is composed of infrared radiations. Thus, options (1), (2) and (4) are properties of infrared radiations. But UV rays are not infrared rays. They are not absorbed by ozone layer in the atmosphere. Therefore, option (3) is not true about infrared radiations.

Keep practicing — related questions