Prism Colour Deviation
Under exam pressure learners get confused as to which one bends the most or least and make mistakes. Especially in assertion questions where they have to identify whether given statements are true and whether one supports or provides eviidence for the other, this confusion increases. It will be better if they visualize images related to this bit of information. Such images stay in the memory for a longer time and are unlikely to be forgotten even under pressure.
Prism Colour Deviation - NCERT Class X
"You have seen that white light is dispersed into its seven-colour components by a prism. Why do we get these colours? Different colours of light bend through different angles with respect to the incident ray, as they pass through a prism. The red light bends the least while the violet the most. Thus the rays of each colour emerge along different paths and thus become distinct. It is the band of distinct colours that we see in a spectrum." (NCERT Class X Physics)
Under exam pressure learners get confused as to which one bends the most or least and make mistakes. Especially in assertion questions where they have to identify whether given statements are true and whether one supports or provides eviidence for the other, this confusion increases. It will be better if they visualize images related to this bit of information. Such images stay in the memory for a longer time and are unlikely to be forgotten even under pressure.
For example, to remember violet light suffers maximum (maxi dress) deviation and red light suffers minimum (mini dress) deviation, they can imagine a person with a full length, violet maxi dress and another in a short, red mini dress.
Violet most deviated colour.
Violet light suffers maximum deviation.
Red least deviated colour.
Red light suffers minimum deviation.
Red light bends the least.
Violet light bends the most.
Wave length is inversely proportionate to deviation.
More deviation - Less Wavelength
Less deviation - More Wavelength
Red - Highest Wavelength
Violet - Least Wavelength
