One Mark Questions :
1. Write two illuminating objects.
2. Position of screen is important in deciding the type of the shadow formed. Give reason.
3. Fill in the blanks :
(i) __________________ from a mirror gives clear image.
(ii) The shadow of coloured object is _______________ .
4. A shadow is not seen in a dark room.Why? What do you infer from the given picture?
5. What is the advantage of pinhole camera?
6. What is transparency?
7. What do you understand by reflection of light?
8. Write the conditions necessary for the formation of shadow
9. How is it possible for us to see non- luminous objects?
10. What is the nature of the image formed when the hole in the pinhole camera is made very narrow
[less than 0.1mm]? Why?
11. What type of shadows are formed by an opaque object and a translucent object?
12. What is the advantage of pinhole camera over the usual lense camera?
13. Give three important examples of mirrors.
14. In what manner does the size of our shadow change when we walk in sunlight.
15. What happens to the image in the pinhole camera when it is moved nearer to the object?
Multiple Choice Questions:
1. What are mirrors? Give two examples.
2. What do you infer from the given picture?
3. What is the difference between luminous and non-luminous bodies?
4. Why is moon not a luminous body?
5. Is it possible to form two or more shadows of an object at the same time?
6. Write any two factors that the nature and size of shadows depend on?
7. When is an image formed and what are the details it provides about an object?
8. What is the difference between a shadow and an image?
9. What do you understand by a primary cell?
10. Distinguish between open and closed circuits.
11. What do you understand by a transparent medium?
12. How can non-luminous body be made luminous?
13. What do you infer from the activity shown in the fig.11.6 (Pg.151).
14. What is the difference between shadow and the image?
Three mark Questions:
2. What are the factors on which the nature and the size of the shadow depend upon?
3. Distinguish between transparent, translucent and opaque objects
4. "During the day time, Ani switched on the lights to study. His sister entered the room and drew the curtains apart, to allow natural light to enter the room and put off the light.
a) What value can you inculcate from Ani's Sister?
b) Write any two natural and two artificial sources of light."
5. What are the factors on which the nature and the size of the shadow depend upon?
Five mark Questions:
1. Describe an activity to show that light travels along a straight line.
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