Question

5) Fig. shows a thin beam of white light from a source & striking on one face of a prism. [3]
| WHITE LIGHT
PRISM
SCREEN

i) Complete the diagram to show the effect of prism on the beam and to show what is seen on
the screen.
ii) A slit is placed in between the prism and the screen to pass only the light of green colour.
What will you then observe on the screen?
iii) What conclusion do you draw from the observation in part (ii) above?​

Answer 1

$\huge{ \color{aqua}{ \underbrace{ \underline{ \color{lime}{ \mathbb{✯꧁ ⋆᭄ SoLuTiOn⋆᭄꧂✯ }}}}}}$

Food poisoning (foodborne illness) is a result of eating food that is contaminated – usually because of bacteria or a virus. It can be an inconvenient experience, but it rarely needs medical attention. With the intake of lot of fluids, good hand hygiene and light meals, you should be back in good health in a day or two.

Food poisoning is a result of you eating contaminated food that has harmful germs, such as Campylobacter, Salmonella or E. coli. Raw foods that include meat, fish and seafood, eggs, poultry, raw fruit and vegetables can have huge levels of germs that easily catch on to other foods and surfaces surrounding the kitchen. Cross contamination among surfaces adds to approximately 40% of all food-borne illnesses. For these reasons, we need to take utmost care while handling or preparing food in the kitchen. Make sure that you remember the four Cs of food hygiene: cross-contamination, cleaning, chilling, and cooking.