{"id":782,"date":"2024-06-22T18:45:49","date_gmt":"2024-06-22T17:45:49","guid":{"rendered":"https:\/\/learnnest.in\/?p=782"},"modified":"2024-06-24T10:19:22","modified_gmt":"2024-06-24T09:19:22","slug":"14-light-and-the-formation-of-shadows","status":"publish","type":"post","link":"https:\/\/learnnest.in\/index.php\/2024\/06\/22\/14-light-and-the-formation-of-shadows\/","title":{"rendered":"14: Light and the Formation of Shadows"},"content":{"rendered":"\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\"Light\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Light and the Formation of Shadows Q & A<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Q.1. Choose an appropriate word and fill in the blanks.<\/strong><\/p>

(a) A star<\/u> is a natural source of light.<\/p>

(b) A candle<\/u> is an artificial source of light.<\/p>

(c) When light passes through a prism, it gets separated into seven<\/u> colours.<\/p>

(d) The image obtained in the pinhole camera is inverted<\/u> .<\/p>

(e) A shadow is formed when an opaque<\/u> object comes in the way of light.<\/p>

(f) When a transparent<\/u> object comes in the way of\u00a0\u00a0<\/strong>light, light passes through<\/u> it.<\/p>

(options : seven, star, through, transparent, opaque, colors, shape, erect, inverted, luminous, candle)<\/p>

Q.2. Write whether the following objects are luminous or non-luminous.<\/strong><\/p>

Object<\/strong><\/p><\/td>

Luminous \/Non-luminous<\/strong><\/p><\/td><\/tr>

A book<\/strong><\/p><\/td>

Non-luminous<\/p><\/td><\/tr>

A burning candle<\/strong><\/p><\/td>

Luminous<\/p><\/td><\/tr>

A wax cloth<\/strong><\/p><\/td>

Non-luminous<\/p><\/td><\/tr>

A pencil<\/strong><\/p><\/td>

Non-luminous<\/p><\/td><\/tr>

A pen<\/strong><\/p><\/td>

Non-luminous<\/p><\/td><\/tr>

A light bulb<\/strong><\/p><\/td>

Luminous<\/p><\/td><\/tr>

A tyre<\/strong><\/p><\/td>

Non-luminous<\/p><\/td><\/tr>

A torch<\/strong><\/p><\/td>

Luminous<\/p><\/td><\/tr><\/tbody><\/table>

\u00a0<\/strong><\/p>

Q.3. Match the following.<\/strong><\/p>

Group A<\/strong><\/p><\/td>

Answers<\/strong><\/p><\/td><\/tr>

Mirror<\/strong><\/p><\/td>

Reflection<\/p><\/td><\/tr>

Firefly<\/strong><\/p><\/td>

Non-luminous<\/p><\/td><\/tr>

Pinhole camera<\/strong><\/p><\/td>

Inverted image<\/p><\/td><\/tr>

Moon<\/strong><\/p><\/td>

Luminous<\/p><\/td><\/tr><\/tbody><\/table>

\u00a0<\/strong><\/p>

Q.4. Write the answers to the following.<\/strong>
(a) What things are necessary for the formation of a shadow?
Ans:<\/strong>The things that are necessary for the formation of a shadow:<\/p>

  1. A source of light<\/li>
  2. An object<\/li>
  3. A surface or screen on which the shadow will be formed<\/li><\/ol>

    \u00a0<\/p>

    (b) When can an object be seen?<\/strong>
    Ans:<\/strong> An object can be seen when the light will reflect on it.<\/p>

    \u00a0<\/p>

    (c) What is a shadow?
    Ans:<\/strong>If an opaque object comes in the way of a light\u00a0source, light doesn\u2019t pass through it.As a result, the light doesn\u2019t reach a wall or any other surface on the other side of the object.That part remains dark. This dark part is called the \u2018shadow of the object\u2019.<\/p>

    \u00a0<\/p>

    \u00a0<\/strong><\/p>

    \u00a0<\/strong><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

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