CBSE Science Class 6 Model Paper From Chapter 11 - Light, Shadows and Reflection

M.M: 29 marks                                                     Date: 28/07/2011

Time: 40 minutes

Q 1: Fill in the blanks             (1 mark per question x 11 = 11 marks)

1. _________ objects do not allow light to pass through them.
2. Light travels in a __________ line.
3. Clear shadows are formed when an ________ object comes in the path of light.
4. __________ objects allow light to pass through them partially.
5. Objects having ability to produce their own light are called _____________ objects.
6. The length of a shadow in daytime is smallest at _______ time.
7. An image that cannot be obtained on a screen is called ___________ image.
8. The left part of an object becomes _______ part when the object is seen in a plane mirror.
9. An image formed at 2 m from the plane mirror will be _____ far from the object.
10. The category of image formed in a cinema screen is ________.
11. The category of image formed in standing clear water is ________.

Q 2: Choose the right answer:                                                (1 mark)

A plane mirror forms an image which is:

1. Inverted
2. Real
3. Enlarged
4. Virtual

Q 3: Find the odd one out:                                                     (1 mark)

1. Sun
2. Stars
3. Burning candle
4. Moon

Q 4: What do you understand by rectilinear propagation of light?        (1 mark)

Q 5: Why do we not see shadow of a plane flying very high in the sky? (1 mark)

Q 6: Write True or False, also write the correct statement wherever applicable for the false ones.    (1 mark per question x 7 = 7 marks)

1. A screen is not always needed for formation of a shadow - ________
2. Shadows can never mislead about the shape of the object - _________
3. Moon is an example of non-luminous object - _______________
4. A firefly is a living source of light - _________
5. The image formed by a pin hole camera is not inverted - __________
6. Shadows and images are same - ___________
7. Coating of mercury is done at the back of a glass to make it a mirror - ________

Q 7: With the help of an activity, prove that a plane mirror reflects light.                                                                                      (2 marks)

Q 8: In brief, describe the construction of a sliding pin hole camera with a diagram.                                                                      (4 marks)

Q 9: Write two conditions that are necessary for an object to be visible to our eyes.                                                                (2 marks)

Q 10: What will happen if you try to see the flame of a burning candle through the following?                                               (3 marks)

1. Opaque object
2. Translucent object
3. Transparent object

Q 11: What is a periscope? Draw its diagram and explain its working in brief.                                                                                   (3 marks)

Q 12: Define light, shadow and reflection.                            (3 marks)