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science

Grade-4-

Easy

Question

We can only see non-luminous objects. This statement is ____.

True
False

hint Hint:

Luminous objects can be seen due to emission of light.

The correct answer is 'False'.

False

We can see both luminous as well as non luminous objects.

We can see both luminous as well as non luminous objects.
Luminous objects can be seen due to emission of light.
Non luminous objects can be seen due to reflection of light.

Related Questions to study

The window is ____.

The window is a non luminous object.
It needs reflection of light to be seen as it can't emit light of it's own.

The window is ____.

scienceGrade-4-

The window is a non luminous object.
It needs reflection of light to be seen as it can't emit light of it's own.

Observe the image given in question and conclude the way in which we see it by choosing one of the phrase given below.

Meteorites are non luminous objects.
They can't emit light of their own.
They need reflection of light to be seen.

Observe the image given in question and conclude the way in which we see it by choosing one of the phrase given below.

scienceGrade-4-

Meteorites are non luminous objects.
They can't emit light of their own.
They need reflection of light to be seen.

Observe the image given in question and conclude the way in which we see it by choosing one of the phrase given below.

Earth is a non luminous object.
It doesn't emit light for it's own.
It can be seen due to the sunlight reflects from it's surface and enters into our eyes.

Observe the image given in question and conclude the way in which we see it by choosing one of the phrase given below.

scienceGrade-4-

Earth is a non luminous object.
It doesn't emit light for it's own.
It can be seen due to the sunlight reflects from it's surface and enters into our eyes.

parallel

Observe the image given in question and conclude the way in which we see it by choosing one of the phrase given below.

Stars are luminous objects.
They emit light of their own.
They can be seen due to emission of light.

Observe the image given in question and conclude the way in which we see it by choosing one of the phrase given below.

scienceGrade-4-

Stars are luminous objects.
They emit light of their own.
They can be seen due to emission of light.

Observe the image given in question and conclude the way in which we see it by choosing one of the phrase given below.

Sun is a luminous object.
Luminous objects can be seen due to there ability to emit light.

Observe the image given in question and conclude the way in which we see it by choosing one of the phrase given below.

scienceGrade-4-

Sun is a luminous object.
Luminous objects can be seen due to there ability to emit light.

Observe the image given in question and conclude the way in which we see it by choosing one of the phrase given below.

The moon has no it's own light , it is a non luminous object.
The sunlight reflects from it's surface and enters in our eyes to make it visible.

Observe the image given in question and conclude the way in which we see it by choosing one of the phrase given below.

scienceGrade-4-

The moon has no it's own light , it is a non luminous object.
The sunlight reflects from it's surface and enters in our eyes to make it visible.

parallel

We are able to play mobile games by looking at a cell phone’s screen because ____.

Mobile phone screen emits light of it's own which makes us able to play games on screen of a cell phone.

We are able to play mobile games by looking at a cell phone’s screen because ____.

scienceGrade-4-

Mobile phone screen emits light of it's own which makes us able to play games on screen of a cell phone.

When light from any object _____, we see it.

To make an object visible reflection or emission of light is necessary.
The reflected or emitted light should enter in our eyes.

When light from any object _____, we see it.

scienceGrade-4-

To make an object visible reflection or emission of light is necessary.
The reflected or emitted light should enter in our eyes.

We can see an object only when _____.

To make an object visible reflection or emission of light is necessary.
The reflected or emitted light should enter in our eyes to make an object visible.

We can see an object only when _____.

scienceGrade-4-

To make an object visible reflection or emission of light is necessary.
The reflected or emitted light should enter in our eyes to make an object visible.

parallel

Plastic lunch boxes are _____.

Plastic lunch boxes are not able to emit light for their own.
Plastic lunch boxes are an example of non luminous objects.

Plastic lunch boxes are _____.

scienceGrade-4-

Plastic lunch boxes are not able to emit light for their own.
Plastic lunch boxes are an example of non luminous objects.

The stars can be seen because they emit light.

Stars emit light for their own and are known as luminous objects.
They are visible to us because of emission of light by them.

The stars can be seen because they emit light.

scienceGrade-4-

Stars emit light for their own and are known as luminous objects.
They are visible to us because of emission of light by them.

A lantern fish can be seen at night as it reflects light.

At night there is no another luminous object that can make a lantern fish visible.
A lantern fish emits light for it's own due to which it is visible even at night.

A lantern fish can be seen at night as it reflects light.

scienceGrade-4-

At night there is no another luminous object that can make a lantern fish visible.
A lantern fish emits light for it's own due to which it is visible even at night.

parallel

The following object can be seen because it reflects light.

Reflection of light or emission of light is necessary to make an object visible.

The following object can be seen because it reflects light.

scienceGrade-4-

Reflection of light or emission of light is necessary to make an object visible.

The object shown below can be seen because it reflects light.

The given object is emitting light or radiations.
It is a luminous object.
Emission of light is the reason which makes the given object visible.

The object shown below can be seen because it reflects light.

scienceGrade-4-

The given object is emitting light or radiations.
It is a luminous object.
Emission of light is the reason which makes the given object visible.

The object shown below can be seen because it reflects light.

The given object is visible due to the light which is bouncing off the surface of the object.
Reflection of light is necessary to make an object visible.

The object shown below can be seen because it reflects light.

scienceGrade-4-

The given object is visible due to the light which is bouncing off the surface of the object.
Reflection of light is necessary to make an object visible.

parallel

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