White light falls on a yellow filter, if:

(a) A green filter is placed behind a yellow filter, what is the colour of the light that will emerge from the green filter?

(b) A blue filter is placed behind a yellow filter, what is the colour of the light that will emerge from the blue filter?

(c) A magenta filter is placed behind a yellow filter, what is the colour of the light that will emerge from the magenta filter?

(d) In all cases give reasons for your answer.

all colours are absorbed except for the colour of the filter.

Explanation:

When white light passes through a coloured filter, all colours are absorbed except for the colour of the filter. For example, an orange filter transmits orange light but absorbs all the other colours. If white light is shone on an orange filter, only the orange wavelengths will be observed by the human eye.

answer: the rock sample is a sedimentary rock.

explanation:

it is given that:

mass of rock sample, m = 2.7 g

volume of rock sample,

so, density of rock sample will be

since, the density of rock sample is . hence, the rock sample is a sedimentary rock, whose densities varies between .

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