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Selina solutions for Class 6 Physics chapter 5 - Light

Selina Concise Physics - Middle School for Class 6 (2018-19 Session)

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Selina Selina Concise Physics - Middle School Class 6 (2018-19 Session)

Selina Concise Physics - Middle School for Class 6 (2018-19 Session)

Chapter 5: Light

Chapter 5: Light solutions [Page 0]

 Write true or false for each statement

 The moon is a natural source of light.

Write true or false for statement

The moon is self luminous.

Write true or false for statement

We can see an object through an opaque medium.

Write true or false for statement

 Light passes through glass.

 

 Write true or false for statement

Light travels in a straight line path. 

 

 Write true or false for statement

 Image formed in a pin hole camera is real.

 

 Write true or false for statement

The image in a pin hole camera gets blurred if the hole is made bigger.

 Write true or false for statement

A shadow is formed because light travels in a straight line path.

Write true or false for statement

Solar eclipse occurs when the sun comes in between the earth and the moon.

Write true or false for statement

 If the shadow of earth falls on the moon, the eclipse is called the lunar eclipse.

Fill in the blank

Light gives us the sensation of ...........

 Fill in the blank

The sun is a ........... source of light.

 Fill in the blank

 A medium through which light cannot pass is called the .................

 Fill in the blank

A medium which allows light to pass through it easily is called the ............................

 Fill in the blank

Moon is a ..................body.

 Fill in the blank

 Light travels in a ................. path.

 Fill in the blank

In a pin hole camera, the image formed is ...............

 Fill in the blank

The darkest portion of a shadow is called the ...........

 Fill in the blank

The less dark portion of a shadow is called the ...............

 Fill in the blank

Lunar eclipse occurs when the .......... comes in between the ............. and the sun.

Match the following columns

Column A Column B
a. Wooden  block  i. new moon's day 
b. Sun  ii. rectilinear propagation of light 
c. Umbra  iii. opaque  body 
d. Eclipse iv. luminous body
e. Solar eclipse v. complete dark park

Select the correct alternative

The natural source of light is

  1. candle flame
  2. electric lamp
  3. sun
  4. kerosene lamp

 Select the correct alternative

The formation of inverted image in a pin hole camera shows that

  1. light enables us to see
  2. light travels in a straight line path
  3. light can pass through the pin hole
  4. light does not pass through the pin hole

Select the correct alternative

The luminous body is

  1. a lighted bulb
  2. earth
  3. noon
  4. table

Select the correct alternative

Umbra is a region of

  1. complete darkness
  2. partial darkness
  3. complete brightness
  4. partial brightness

 Select the correct alternat

Penumbra is a region of

  1. complete darkness
  2. complete brightness
  3. partial brightness
  4. none of the above

Select the correct alternative

Solar eclipse occurs on

  1. every new moon’s day
  2. certain new moon’s day
  3. every full moon’s day
  4. certain full moon’s day

Select the correct alternative

Lunar eclipse occurs on

  1. every full moon’s night
  2. certain full moon’s night
  3. every new moon’s day
  4. certain new moon’s day

Chapter 5: Light solutions [Page 0]

What is light ? Define it.

 

How does light make an object visible ?

Name two natural sources of light.

List two artificial sources of light.

Differentiate between the luminous and non-luminous bodies. Give two examples of each.

Is the moon a luminous object ?

What do we call a body that schemes on its own ?

What do we call an electric bulb producing light ?

What is a transparent medium ? Give two examples.

Explain the difference between a transparent, a translucent and an opaque medium. Give two examples of each.

What do we call a substance through which we cannot see light ? Give an example of such a substance.

What do we call a substance through which light passes ? Give an example of such a substance.

Can a transparent medium form an image ? Explain your answer.

How can you obtain a point source of light ?

Define the terms : a ray of lightand a beam of light.

What do you mean by ‘rectilinear propagation of light’ ?

Describe an experiment to show that light travels in a straight line path.

In which of the following two arrangements (a) and (b) shown in the diagram, you can see the light of the bulb ? Explain Your answer

Name a simple application of the rectilinear propagation of light

What is a pin hole camera ? Draw a neat and labelled diagram to show the formation of image of a lighted candle by it.

Explain the formation of image of a luminous object in a pin hole camera with the aid of a neat diagram.

State two factors which affect the size of image formed in a pin hole camera.

Is the image obtained in a pin hole camera erect or inverted ? Give reason for your answer.

How is the image affected in a pin hole camera when another fine hole is made near the first pin hole ?

State the effect on the image in a pin hole camera if The hole is made bigger.

State the effect on the image in a pin hole camera if The luminous object is moved towards the pin hole.

State the effect on the image in a pin hole camera if The length of the pin hole camera is increased (le. the screen is moved away from the pin hole) .

What is a shadow ? Give a reason for its formation.

Draw a ray diagram to show the formation of shadow of an opaque object by a point source of light. How is the size of shadow affected if the screen is moved away from the object?

State two differences between an umbra and a penumbra.

Draw a ray diagram to show the formation of umbra alone.

Draw a ray diagam to show the formation of umbra and penumbra both. Label the parts umbra and penumbra in your diagram.

In  the following diagram, draw rays to form umbra on the screen.

In the following diagram, draw rays to form penumbra on the screen.

State the conditions when only the penumbra of an opaque object is obtained on the screen.

Why is it that the birds flying in the sky do not cast their shadow on the earth ?

Why are shadows at noon shorter than in the morning or in the evening ?

What is an eclipse ? Name the two types of eclipses.

When does a lunar eclipse take place ? Does it occur on every full moon’s night ?

Draw a diagram to show the formation of lunar eclipse.

When does a solar eclipse take place ? Does it occur on even’ new moon’s day ?

Draw a diagram to show the formation of solar eclipse.

 

What is annular solar eclipse ? Draw a labelled diagram to show its formation.

Chapter 5: Light solutions [Page 0]

Name any four man made sources of light.

Why do objects in a room become visible even if sunlight does not enter it?

Does the flame of a gas stove emit light?

Name few living things which emit light.

Chapter 5: Light solutions [Page 0]

From among the following objects, list out the opaque, translucent and transparent bodies in the space provided below:
A glass strip, an ordinary paper, greased paper, tracing paper, polythene sheet, wooden piece, steel plate, glycerine, kerosene oil, mustard oil, grounded glass, stone, book, water and milk.
Opaque Transparent Translucent

Chapter 5: Light solutions [Page 0]

Write the names of some transparent objects.

What happens in a solar eclipse ?

What do you understand by candle power ?

Write the names of some cold light emitting objects.

Chapter 5: Light solutions [Page 0]

Tick the correct answer

1. Light causes

  1. Sensation of heat
  2. Sensation of vision
  3. Sensation of sound
  4. None of these

Tick the correct answer

Light is a fonn of

  1. Work
  2. Energy
  3. Power
  4. None of these

Tick the correct answer

The natural source of light is

  1. Sun
  2. Electric lamp
  3. Candle flame
  4. Kerosene lamp

Tick the correct answer

A tubelight is a

  1. Hot source
  2. Cold source
  3. Incandescent source
  4. None of these

Tick the correct answer

Glass is

  1. Opaque
  2. Luminous
  3. Transparent
  4. None of these

Tick the correct answer

substance which don’t allow light to pass through them,

  1. Transparent substance
  2. Opaque substance
  3. Translucent substances
  4. Non-luminous substance

Tick the correct answer

The image formed in a pinhole camera is

  1. inverted
  2. upright
  3. always enlarged
  4. always diminished

Tick the correct answer

Shadow forms on the

  1. Opposite side of the object
  2. Same side of the object
  3. On the same plane of the object
  4. None of these

Tick the correct answer

When the moon comes in between the sun and the earth, and all three are in a straight line, then it is

  1. Solar eclipse
  2. Lunar eclipse
  3. Either solar eclipse or lunar eclipse
  4. No eclipse

Tick the correct answer

Umbra is a region of

  1. Partial darkness
  2. Partial brightness
  3. Complete brightness
  4. Complete darkness

 Fill in the blank

The Sun and .............. are the natural sources of light.

 Fill in the blank

There are ........... and man-made ............of light.

 Fill in the blank

The brightness of light is measured in ...................

 Fill in the blank

Shadows are formed when .......... blocks ..............

 Fill in the blank

 Eclipses are the formation of ............ in nature.

 Fill in the blank

 A lunar eclipse is formed on .............. day.

 Fill in the blank

 A ............. is formed when the path of light is obstructed by an ..............

 Fill in the blank

Light consists of .............. colours.

 Fill in the blank

Pinhole camera is based on the ................... propagation of light.

 Fill in the blank

A solar eclipse occurs only on a .........................

 Fill in the blank

Speed of light in vacuum is .................

Match the following

1. Transparent object i. Football
2. Eclipses ii. Glass
3. Translucent object iii. Fluorescent tube
4. Luminous object  iv. Tracing paper
5. Non - luminous object

v. Shadows

   

Write true or false

The moon has its own light.

Write true or false

The earth has its own light.

Write true or false

The stars have no light.

 

Write true or false

Opaque objects do not allow light to pass through them.

Write true or false

Image formed in a pinhole camera is erect.

Chapter 5: Light solutions [Page 0]

What is light ?

List four natural sources of light.

Write down five man-made sources of light.

What is meant by luminous intensity ? What is one lumen ?

Distinguish between transparent, translucent and opaque objects.

List two transparent objects.

Name some sources of light that are not hot.

How is a shadow formed ? Write the conditions required for a shadow to form.

Differentiate between luminous and non-Iuminous objects.

How can you see the solar eclipse safely ?

Chapter 5: Light

Selina Selina Concise Physics - Middle School Class 6 (2018-19 Session)

Selina Concise Physics - Middle School for Class 6 (2018-19 Session)

Selina solutions for Class 6 Physics chapter 5 - Light

Selina solutions for Class 6 Physics chapter 5 (Light) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the CISCE Selina Concise Physics - Middle School for Class 6 (2018-19 Session) solutions in a manner that help students grasp basic concepts better and faster.

Further, we at Shaalaa.com are providing such solutions so that students can prepare for written exams. Selina textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Class 6 Physics chapter 5 Light are Concept of Light, Rectilinear Propagation of Light, Applications of Rectilinear Propagation of Light, Pinhole Camera - Principle and Working, Pinhole Camera - Factors on Which the Size of the Image Produced Depends on, Shadows - Umbra, Shadows - Penumbra, Shadows - Natural Shadows – Eclipses.

Using Selina Class 6 solutions Light exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in Selina Solutions are important questions that can be asked in the final exam. Maximum students of CISCE Class 6 prefer Selina Textbook Solutions to score more in exam.

Get the free view of chapter 5 Light Class 6 extra questions for Physics and can use Shaalaa.com to keep it handy for your exam preparation

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