To see shadows with the help of our eyes, a screen is required.
Shadows are formed when an object blocks the light. A screen is necessary for the shadow to be projected and only after that, a shadow is visible.
Why can’t we see an atom with our naked eyes?
Which of the following says why it's not possible to see an atom with our naked eyes?
Give two reasons why is it not possible to see an atom with our naked eyes? [2 MARKS]
A virtual image, we always say, cannot be caught on a screen. Yet when we ‘see’ a virtual image, we are obviously bringing it on to the ‘screen’ i.e., retina of our eye. Is there a contradiction? [3 MARKS]