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Nidhi Ahuja

Sep 20, 2014

Distinguish between luminous and non luminous objects.

This answer has an image. Please click on the question to read more.

Answer (13)

Sanjeev Tiwari

Jan 2, 2015

What is meant by lateral inversion? Give an example to illustrateb its use in practice.

This answer has an image. Please click on the question to read more.

Answer (3)

Rumaisa

Feb 12, 2014

pls answer this question

A mirror is an  opaque object which does not allow light passes through it. The light cannot pass through the mirror from one side to the other side. But we can clearly see th...

Answer (7)

Yash Goel

Mar 24, 2015

The image formed by a pin-hole camera is always inverted . Why ?

This answer has an image. Please click on the question to read more.

Answer (1)

Sanjeev Tiwari

Jan 1, 2015

Classify the materials given below as opaque, translucent or transparent: Air, smoke, fog, aluminum sheet, wooden board, cellotape, polythene sheet, lime juce, wax, rubber tyre and milk

Transparent objects:
The objects that can allow light to pass through them. These objects do not form shadow
Examples: aluminium sheet, wooden board, w...

Answer (2)

Daithui

Sep 15, 2013

why is it always black? even if the object is not black?

Let's do an activity to observe the colour of a shadow: 
  1. Take 3 balls of equal size but different colours. 
  2. ...

Answer (8)

Sanjeev Tiwari

Jan 1, 2015

Do fishes cast shadows in water?

Yes, of course. The body of a fish is opaque. Hence if sunlight or any other light falls on it it casts a shadow on the other side.But it depends on how far is the screen from the fish. The screen may the floor...

Answer (1)

Mrs mona Rangra

Jan 11, 2015

Is moon a luminous object?

No. Moon is not a luminous object. It cannot emit the light rays by itself and if it does not have its own light source. Moon appears glowing because it is reflecting the light ray...

Answer (4)

Nidhi gulati

Mar 2, 2014



Explain the working of a pinhole camera?

This answer has an image. Please click on the question to read more.

Answer (1)

Vipul

Mar 2, 2014

we depend on light energy for food and fuel ,how?explain.

Sun is the source of almost all the energies in our earth. Plants make food using sunlight...

Answer (2)

Nidhi Ahuja

Sep 20, 2014

Distinguish between luminous and non luminous objects.

This answer has an image. Please click on the question to read more.

Answer (13)

Sanjeev Tiwari

Jan 2, 2015

What is meant by lateral inversion? Give an example to illustrateb its use in practice.

This answer has an image. Please click on the question to read more.

Answer (3)

Rumaisa

Feb 12, 2014

pls answer this question

A mirror is an  opaque object which does not allow light passes through it. The light cannot pass through the mirror from one side to the other side. But we can clearly see th...

Answer (7)

Yash Goel

Mar 24, 2015

The image formed by a pin-hole camera is always inverted . Why ?

This answer has an image. Please click on the question to read more.

Answer (1)

Sanjeev Tiwari

Jan 1, 2015

Classify the materials given below as opaque, translucent or transparent: Air, smoke, fog, aluminum sheet, wooden board, cellotape, polythene sheet, lime juce, wax, rubber tyre and milk

Transparent objects:
The objects that can allow light to pass through them. These objects do not form shadow
Examples: aluminium sheet, wooden board, w...

Answer (2)

Daithui

Sep 15, 2013

why is it always black? even if the object is not black?

Let's do an activity to observe the colour of a shadow: 
  1. Take 3 balls of equal size but different colours. 
  2. ...

Answer (8)

Sanjeev Tiwari

Jan 1, 2015

Do fishes cast shadows in water?

Yes, of course. The body of a fish is opaque. Hence if sunlight or any other light falls on it it casts a shadow on the other side.But it depends on how far is the screen from the fish. The screen may the floor...

Answer (1)

Mrs mona Rangra

Jan 11, 2015

Is moon a luminous object?

No. Moon is not a luminous object. It cannot emit the light rays by itself and if it does not have its own light source. Moon appears glowing because it is reflecting the light ray...

Answer (4)

Nidhi gulati

Mar 2, 2014



Explain the working of a pinhole camera?

This answer has an image. Please click on the question to read more.

Answer (1)

Vipul

Mar 2, 2014

we depend on light energy for food and fuel ,how?explain.

Sun is the source of almost all the energies in our earth. Plants make food using sunlight...

Answer (2)

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