Light Shadows and Reflections Class 7 Questions and Answers Science Chapter 11
Light Shadows and Reflections Class 7 Questions and Answers Science Chapter 11 1. Which of the following are luminous objects? Mars, Moon, Pole Star, Sun, Venus, Mirror Answer: The luminous objects are the Sun and the Pole Star. Mars, Moon, Venus, and Mirror are non-luminous objects because they do not emit their own light; they reflect light from other sources. 2.Match the items in Column A with those in Column B. Answer : Column A Column B Pinhole camera Forms an inverted image Opaque object Blocks light completely Transparent object Light passes almost completely through it Shadow The dark region formed behind the object 3. Sahil, Rekha, Patrick, and Qasima are trying to observe the candle flame through the pipe as shown in Fig. 11.16. Who can see the flame? Answer : Rekha can see the candle flame because she is looking through a straight pipe, and light travels in a straight line. Sahil, Patrick, and Qasima cannot see the flame because their pipes are bent. 4. Look at th...