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SCERT Class 6 Science Chapter 11Answer | Light, Shadows and Reflections

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SCERT Class 6 Science Chapter 11Answer | Light, Shadows and Reflections

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Light, Shadows and Reflections

Chapter 11

Exercises

<ol class="wp-block-list">
<li>Rearrange the boxes given below to make a sentence that helps us understands opaque object.</li>
</ol>

OWS AKE OPAQ UEO BJEC TSM SHAD

Ans: OPAQ UEO BJEC TSM SHAD OWS

<figure class="wp-block-image size-full is-resized"><img src="https://mightlearn.com/wp-content/uploads/2024/10/image-19.png" alt="" class="wp-image-20846" style="width:713px;height:auto"/></figure>

<ol start="2" class="wp-block-list">
<li>Classify (শ্ৰেণীবিভাগ) the objects or materials given below as opaque, transparent or translucent and luminous or non-luminous:</li>
</ol>

Air, water, a piece of rock, a sheet of aluminium, a mirror, a wooden board, a sheet of polythene, a CD, smoke, a sheet of plane glass, fog, a piece of red hot iron, an umbrella, a lighted fluorescent tube, a wall, a sheet of carbon paper, the flame of a gas burner, a sheet of cardboard, a lighted torch, a sheet of cellophane, a wire mesh, kerosene stove, sun, firefly, moon.

Ans:- Opaque:- a piece of rock, a sheet of aluminium, a wooden board, a CD, a wall, a sheet of carbon paper.

Swachhah- Air, water, a mirror, a sheet of plane glass.

Ishat Swachhah: - a sheet of polythene, smoke, polythene.

Radiantman:- a piece of red hot iron, a lighted fluorescent tube, the flame of a gas burner, a lighted torch, kerosene stove, sun, zonaki pigeon, moon.

Lightless:- An umbrella, a cardboard, a wire mesh, a selfen (paper), a piece of stone, an aluminum, a cardboard, a CD, a wall, a single carbon paper.

<ol start="3" class="wp-block-list">
<li>Can you think of creating a shape that would give a circular shadow if held in one way and a rectangular shadow if held in another way?</li>
</ol>

Ans:- Yes, there are many things which give a circular shadow if held in one way and a rectangular shadow if held in another way.

<ol start="4" class="wp-block-list">
<li>In a completely dark room, if you hold up a mirror in front of you, will you see a reflection of yourself in the mirror?</li>
</ol>

Ans:- In a completely dark room, if we put a mirror in front of us, we will not see any reflection in the room as there is no light source in the room.

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