Filters don't change the color of light. They selectively absorb or transmit light based on its color. Anything that comes out of a filter must have been there before the light entered the filter.
A red filter will absorb all but the red wavelength of light. A blue filter absorbs all but blue light. So the blue filter will absorb the red wavelength and no light will shine through.
red
because the red filter do not absorb the red spectrum of light it simply passes through it.
A green object appears black when viewed through a red filter (here a red filter means red light) because green object can only reflect green color and absorb all the other colors so in the red light it will definitely appear black.
Filters don't change the color of light. They selectively absorb or transmit light based on its color. Anything that comes out of a filter must have been there before the light entered the filter.
A red filter will absorb all but the red wavelength of light. A blue filter absorbs all but blue light. So the blue filter will absorb the red wavelength and no light will shine through.
red
Roses absorb all the colors except the color red, red gets reflected back into our eyes when we look at the rose.
Carrots are orange not red and they are this color because they do not absorb the color red from the light
because the red filter do not absorb the red spectrum of light it simply passes through it.
It is dark red.
A green object appears black when viewed through a red filter (here a red filter means red light) because green object can only reflect green color and absorb all the other colors so in the red light it will definitely appear black.
red and green
red and violet spectrum
Blue and Red -Mastering Biology 4th edition
A red filter blocks every color except red from getting through, so you would see red.