Assertion: In electromagnetic spectrum, the small portion around 1015 Hz is called visible light. Reason: Visible region is only a small part of the entire spectrum which our eyes can see.

Question

Assertion: In electromagnetic spectrum, the small portion around 1015 Hz is called visible light. Reason: Visible region is only a small part of the entire spectrum which our eyes can see. (A) If both assertion and reason are true and reason is the correct explanation of assertion. (B) If both assertion and reason are true but reason is not the correct explanation of assertion. (C) If assertion is true but reason is false. (D) If both assertion and reason are false.

Tardigrade Admin · Accepted Answer

The Visible region of electromagnetic spectrum varies from

380 nm

to

760 nm

i.e.

7 \times

1 0^{14} Hz

to

4 \times 1 0^{14} Hz

This is the only region which is visible to human eyes. That's why it is termed as the Visible region. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

Q. Assertion : In electromagnetic spectrum, the small portion around 1015Hz is called visible light. Reason : Visible region is only a small part of the entire spectrum which our eyes can see.

If both assertion and reason are true and reason is the correct explanation of assertion.

If both assertion and reason are true but reason is not the correct explanation of assertion.

If assertion is true but reason is false.

If both assertion and reason are false.

The Visible region of electromagnetic spectrum varies from 380nm to 760nm i.e. 7× 1014Hz to 4×1014Hz This is the only region which is visible to human eyes. That's why it is termed as the Visible region. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

Q. Assertion : In electromagnetic spectrum, the small portion around $1 0^{15} Hz$ is called visible light.
Reason : Visible region is only a small part of the entire spectrum which our eyes can see.