Questions & answers for Chapter 11 Light shadows and reflection

Chapter 11 Light shadows and reflection Questions and Answers for class 6 Science

Find below Important MCQ-based objective questions for Chapter 11 Light shadows and reflection prepared for CBSE students. All the syllabus of Class 6 Science Chapter 11 Light shadows and reflection is covered with questions and answers. Each question is explained with a detailed solution. The entire syllabus of Chapter 11 Light shadows and reflection is covered in the following worksheet for class 6 science. For more worksheets for class 6 science click on the link and do check out NCERT solutions for class 6 science. 

Find below Class 6 Science Chapter 11 Light shadows and reflection Questions & Answer

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Class 6 Science Chapter 11 Light shadows and reflection Questions & Answer Set-1

Science - MCQ on Light, Shadows And Reflection

Class VI

Q.1. To see a shadow, we require

a. a source of light and a screen.

b. a source of light as well as an opaque object.

c. a source of light, an opaque object and a screen.

d. a source of light, a transparent object and a screen.

Answer:

(c)

Explanation: A shadow is formed on a screen when an opaque object obstructs light coming from a source of light.

Q.2. We should never look directly at the sun because

a. it is harmful for our eyes.

b. it is a natural luminous object.

c. it is far away from the earth.

d. it is good for our eyes.

Answer:

(b)

Explanation: The UV rays present in sunlight may damage the vital parts of our eyes. So, we should never look at the sunlight directly.

Q.3. The shadows is

a. dark in colour.

b. colourful.

c. white in colour.

d. bright in colour.

Answer:

(b)

Explanation: Shadows are formed by the obstruction of light. So, they are dark in colour.

Q.4. In a bright sunlight, Aswathi notices circular images of the sun when she passes under a tree covered with large number of leaves. This happens

a. because of the reflection of light from the leaves.

b. because the leaves are opaque objects.

c. because the leaves are large in number.

d. because the gaps between the leaves act as the pin holes.

Answer:

(d)

Explanation: Aswathi notices circular images of the sun when she passes under a tree covered with large number of leaves in bright sunlight because the gaps between the leaves act as the pinholes of pinhole cameras.

Q.5. In bright sunlight, Garima notices that the pinhole images of the sun formed by the gaps of leaves of a tree to be circular. The gaps between the leaves are

a. circular in shape.

b. rectangular in shape.

c. square in shape.

d. of irregular shapes.

Answer:

(d)

Explanation: The gaps between the leaves are of irregular shapes. However, the images are circular because the sun appears to be circular in shape when sseen from distant places.

Q.6. The images formed by a pin hole camera are inverted as compared to the real objects, however we cannot notice this effect in case of pin hole images of the sun because the

a. sun is a natural luminous object.

b. images of the sun are circular in shape.

c. images of the sun are bright.

d. gaps between the leaves are irregular in shape.

Answer:

(b)

Explanation: It is because the images of the sun are circular in shape. The inverted and the non-inverted circular images are similar.

Q.7. Sandeep is observing a burning candle through a straight hollow pipe. If he bends the pipe at its middle, then

a. the candle will not be seen through the pipe.

b. the candle will still be visible through the pipe.

c. the candle will move towards the right.

d. the candle will move towards the left.

Answer:

(b)

Explanation: Light coming from the candle will be blocked by the bent part of the pipe. Since light travels in a straight line, the candle will not be visible through the pipe.

Q.8. Reflection of light means the

a. formation of shadows.

b. formation of images.

c. change in the direction of light.

d. change in the shape of images.

Answer:

(c)

Explanation: When light falls on opaque objects, it changes its direction. This is called reflection of light.

Q.9. If we change the position of an object with respect to the source of light, its shadows will

a. change accordingly.

b. not change at all.

c. not be formed.

d. overlap one another.

Answer:

(b)

Explanation: If we change the position of an object with respect to the source of light, its shadows will change accordingly. In fact, shadows cannot tell us the shape, size and colour of the object.

Q.10. Light

a. cannot be absorbed but transmitted.

b. cannot be reflected but absorbed.

c. cannot be transmitted but absorbed and reflected.

d. can be reflected, absorbed and transmitted.

Answer:

(b)

Explanation: Light can be absorbed, reflected and transmitted. It can be absorbed by a black substance like black board, reflected by a mirror or pass through a transparent glass.

Q.11. Mukta can see the image of her face in the mirror due to the

a. formation of shadows.

b. absorption of light.

c. reflection of light.

d. transmittance of light.

Answer:

(c)

Explanation: Images can be seen in the mirror due to the reflection of light coming from the object to the mirror.

Class 6 Science Chapter 11 Light shadows and reflection Questions & Answer Set-2

Q.12. Light

a. does not travel in straight line.

b. does not change the direction of light after reflection.

c. cannot pass through transparent objects.

d. can pass through transparent objects.

Answer:

(d)

Explanation: Light can pass through transparent objects like windowpanes. Such process is called as transmittance of light.

Q.13. Firefly is

a. a natural source of light.

b. An artificial source of light.

c. not a source of light.

d. known for absorbing sunlight.

Answer:

(b)

Explanation: Firefly is an insect that emits its own light. It can produce light due to some chemical reactions taking place inside its body.

Q.14. The shadows of a red ball and a blue ball will

a. have different colours.

b. appear dark.

c. appear red and blue respectively.

d. appear bright.

Answer:

(b)

Explanation: Shadows are always dark. So, the shadows of the two balls will also appear dark.

Q.15. Radha cannot see her clear image in water because

a. water is opaque.

b. of reflection of light from water surface.

c. of transmittance of light through water.

d. of partial reflection and partial transmittance of light.

Answer:

(d)

Explanation: Light can pass through water. It can also be reflected back from the water surface. Hence, Radha cannot see her clear image in water due to partial reflection and partial transmittance of light.