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Heat — Science STD 7 — Question

Gujarat BoardEnglish MediumSTD 7ScienceHeat1 Mark
MCQ
The following question consist of two statement
Assertion (A) and Reason (R). Answer these questions by selecting the appropriate option given below
Assertion (A) Sunlight reaches to the earth by radiation process.
Reason (R) The transfer of heat by radiation does not require any medium.
  • ✓
    Both A and R are true and R is the correct explanation of A.
  • B
    Both A and R are true but R is not the correct explanation of A.
  • C
    A is true but R is false.
  • D
    A is false but R is true.
✓

Answer

Correct option: A.
Both A and R are true and R is the correct explanation of A.
(A) Both A and R are true and R is the correct explanation of A.
The process of transfer of heat energy from a hot body to a cold body by means of heat rays without any medium between them is known as radiation. So, sunlight does not require any medium to reach earth from space.

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