A) the light intensity gets reduced with no change in its color
B) light color changes first to yellow and then red with no change in intensity
C) it stops working suddenly while giving white light
D) color changes to red and also intensity gets reduced
Correct Answer: D
Solution :
As batteries wear out, temperature of filament of flash light attains lesser value, therefore intensity of radiation reduces. Also dominating wavelength \[({{\lambda }_{m}})\] in specturm, which is the red colour, increases.You need to login to perform this action.
You will be redirected in
3 sec