Maharashtra Board Class 6 Science Solution Chapter 14 – Light and the Formation of Shadows
Balbharati Maharashtra Board Class 6 Science Solution Chapter 14: Light and the Formation of Shadows. Marathi or English Medium Students of Class 6 get here Light and the Formation of Shadows full Exercise Solution.
|Maharashtra Class 6|
Light and the Formation of Shadows
1.) Choose an appropriate word and fill in the blanks.
a.) A star is a natural source of light.
b.) A candle is an artificial source of light.
c.) When light passes through a prism, it gets separated into seven colours.
d.) The image obtained in the pinhole camera is inverted.
e.) A shadow is formed when an opaque object comes in the way of light.
f.) When a transparent object comes in the way of light, light passes through it.
(options : seven , star , through , transparent, opaque, colours , shape , erect , inverted , luminous, candle )
2.) Write whether of the following objects are luminous or non- luminous.
|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|
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 Reflection
b.) Firefly Luminous
c.) Pinhole camera Inverted image
d.) Moon Non – luminous
4.) Write the answers to the following.
a.) What things are necessary for the formation of a shadow?
The source of light, an opaque object whose shadow will be created and the surface which is essential for the formation of a shadow. So, these are the things that are necessary for the formation of a shadow. When the light does not travel through the object, then the shadow of an object is formed. The type of shadow it creates is determined by the relative distances between the source of light, the object and the screen which is necessary for the formation of a shadow. The shadow of an object which is created because of the sunlight is quite lengthy in the mornings and evenings and transient in the afternoon. If we observe the trees along the roadside, then these changes can be easily noticed.
b.) When can an object be seen?
When the light rays that falls on an object from a source of light are reflected back from the surface of that object, then it is known as reflection of light. Then the reflected rays reaches our eyes, which enables us to see the object. Lighting of moon is one of the relevant example of reflection of light. Moon does not have it’s own light but it glows because of the reflection of light waves.
c.) What is a shadow?
When the path of light is blocked by an opaque object, then shadow is formed. There will be no shadow, if an object blocks all the lights. The shape of the shadow always remains the same in comparison to that of the object but there is a variation in size . If the quantity of light that are blocked remains the same, then the shadow of different types of objects depicts the similar shape. Shadows does not appear in rooms, where there is no light and it also does not appear in fully lighted rooms where there is no opaque object. A shadow is always acquired on a surface or screen, as for instance, ground and walls. Despite of the colour of the object, a shadow is always greyish or blackish in colour.