Why is the image on the diaphragm of the pinhole camera inverted?
Important Questions on Light and the Formation of Shadows
What difference do you notice on looking through the windows in the picture? What causes the difference?
The picture shows transparent, opaque, translucent window panes. Spot them.
Choose an appropriate word and fill in the blank.
A _____ is a natural source of light.
(Options: seven, star, through, transparent, opaque, colours, shape, erect, inverted, luminous, candle)
Choose an appropriate word and fill in the blank.
A _____ is an artificial source of light.
(Options: seven, star, through, transparent, opaque, colours, shape, erect, inverted, luminous, candle)
Choose an appropriate word and fill in the blank.
When light passes through a prism, it gets separated into _____ colours.
(Options: seven, star, through, transparent, opaque, colours, shape, erect, inverted, luminous, candle)
Choose an appropriate word and fill in the blank.
The image obtained in the pinhole camera is _____.
(Options: erect, inverted)
Choose an appropriate word and fill in the blank.
A shadow is formed when an _____ object comes in the way of light.
(Options : transparent, opaque, erect, inverted, luminous)
Write whether of the following objects are luminous or non-luminous.
| Object | Luminous/ Non-luminous |
| A book | |
| A burning candle | |
| A wax cloth | |
| A pencil | |
| A pen | |
| A light bulb | |
| A tyre | |
| A torch |
