Chapter-14-Light and the Formation of Shadows
Maharashtra Board Class 6th General Science Chapter 14
Solution
Question 1:
Choose an appropriate word and fill in the blanks.
(options : seven, star, through, transparent, opaque, colors, shape, erect, inverted, luminous, candle)
(a) A ........... is a natural source of light.
A star is a natural source of light.
(b) A ……… is an artificial source of light.
A candle is an artificial source of light.
(c) When light passes through a prism, it gets separated into ....... colours.
When light passes through a prism, it gets separated into seven colours.
(d) The image obtained in the pinhole camera is ……… .
The image obtained in the pinhole camera is inverted.
(e) A shadow is formed when an ……….. object comes in the way of light.
A shadow is formed when an opaque object comes in the way of light.
(f) When a ……….. object comes in the way of light, light passes ...…... it.
When a transparent object comes in the way of light, light passes through it.
Question 2.
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 |
| Object | Luminous/Non-luminous |
| A book | Non-luminous |
| A burning candle | Luminous |
| A wax cloth | Non-luminous |
| A pencil | Non-luminous |
| A pen | Non-luminous |
| A light bulb | Luminous |
| A tyre | Non-luminous |
| A torch | Luminous |
Question 3.
Match the following.
| Group A | Group B |
| (a) Mirror | (1) Non-luminous |
| (b) Firefly | (2) Inverted image |
| (c) Pinhole camera | (3) Reflection |
| (d) Moon | (4) Luminous |
Group A
Group B
(a) Mirror
(3) Reflection
(b) Firefly
(4) Luminous
(c) Pinhole camera
(2) Inverted image
(d) Moon
(1) Non-luminous
Question 4.
Write the answers to the following.
(a) What things are necessary for the formation of a shadow ?
The things necessary for the formation of a shadow are:
(b) When can an object be seen ?
The light rays from the source of the light, fall on an object. When this light reflects from the surface of the object, it enters our eyes. Therefore, we are able to see this object. The luminous objects can be seen as they emit their own light.
(c) What is a shadow ?
Shadow is produced by an opaque object. Light does not pass through an opaque object. It does not reach the wall or any other surface on the other side of the object. This part therefore remains dark. This dark area is called the shadow of that object.
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