Flashlight equipped with a new set of batteries produces bright white light. As the batteries were out

Question

Flashlight equipped with a new set of batteries produces bright white light. As the batteries were out (A) The light intensity gets reduced with no change in its colour (B) Light colour changes first to yellow and then red with no change in intensity (C) It stops working suddenly while giving white light (D) Colour changes to red and also intensity gets reduced

Tardigrade Admin · Accepted Answer

As batteries wear out, the temperature of the filament of flashlight attains a lesser value, therefore the intensity of radiation reduces. Also dominating wavelength (.(λ )m.) in the spectrum, which is the red colour, increases.

Q. Flashlight equipped with a new set of batteries produces bright white light. As the batteries were out

The light intensity gets reduced with no change in its colour

Light colour changes first to yellow and then red with no change in intensity

It stops working suddenly while giving white light

Colour changes to red and also intensity gets reduced

As batteries wear out, the temperature of the filament of flashlight attains a lesser value, therefore the intensity of radiation reduces. Also dominating wavelength $((λ)_{m})$ in the spectrum, which is the red colour, increases.

Q. Flashlight equipped with a new set of batteries produces bright white light. As the batteries were out

The light intensity gets reduced with no change in its colour

Light colour changes first to yellow and then red with no change in intensity

It stops working suddenly while giving white light

Colour changes to red and also intensity gets reduced

As batteries wear out, the temperature of the filament of flashlight attains a lesser value, therefore the intensity of radiation reduces. Also dominating wavelength ((λ)m​) in the spectrum, which is the red colour, increases.

As batteries wear out, the temperature of the filament of flashlight attains a lesser value, therefore the intensity of radiation reduces. Also dominating wavelength $((λ)_{m})$ in the spectrum, which is the red colour, increases.