NEET Physics Question - Ray Optics - Lens Makers Formula/ Len's Formula

Assertion (A): Warning signals installed at the top of tall buildings and monuments employ red light.

Reason (R): Human eye is most sensitive to red colour.

Both (A) & (R) are true and the (R) is the correct explanation of the (A)

Both (A) & (R) are true but the (R) is not the correct explanation of the (A)

(A) is true but (R) is false

Both (A) and (R) are false

Solution:

Red light has the longest wavelength and scatters least, making it visible from a distance. Thus, (A) is true. However, the human eye is most sensitive to yellow-green light (approximately \(555\text{ nm}\)), not red. Thus, (R) is false. So, (A) is true but (R) is false.

Rankers Physics

Warning Signals and Eye Sensitivity

Solution:

Leave a Reply Cancel reply