Quiz Reflection and refraction of Light

1.What are luminous object mentioned in the programme? (i)The Sun (ii)Star (iii)Planet (iv)Moon (v)Flame Only (i), (ii) and (iii) Only (i), (ii) and (v) Only (i), (iii) and (v) All of the above

2. Over two thousand years ago, the Chinese were already using a pin-hole to create images. State the principle for the use of pin-hole camera and the formation of pin-hole image. Based on the fact that light travels in the straight line. Based on Reflection of Light Based on Refraction of Light Based on Diffraction of Light

3. We cannot see light in outer space. Why? There is no air in space, so light cannot travel through space. There are only very small amount of dust particles in outer space, we cannot see light as it travels through space. Black hole in space to attract all the light in space. The sun's rays are not strong enough to illuminate the space.

4.Which of the following(s) about the Laws of Reflection is(are) correct? (i) The incident ray, the reflected ray and the normal line are all in the same plane. (ii)The reflected angle is the angle between the reflected ray and the mirror plane. (iii)The incident angle = The reflected angle Only (i) Only (ii) Only (i) and (ii) Only (i) and (iii)

5. In the dark environment, use a light torch to illuminate a mirror and a piece of paper. Which of the object is brighter? Both the mirror and paper look bright. The mirror looks dark, while the paper is very bright. The paper looks dark, while the mirror is very bright. Both the mirror and paper look dark.

6. Which of the following can be used to describe the images formed by a plane mirror? (i) Erect (ii) Diminished (iii)Laterally inverted (iv)In front of the mirror Only (iii) Only (ii) and (iv) Only (i) and (iii) Only (iii) and (iv)

7.Which of the following about periscope is correct? The image formed by a periscope is magnified. The image formed by a periscope is inverted. The image formed by a periscope is laterally inverted. The image formed by a periscope is erect.

8. Which cause the phenomenon in which swimming pool looks shallower than the actual depth? Reflection of Light Refraction of Light Total Internal Reflection Dispersion of Light

9. When we look at a fish in the water tank, it apperas to be bigger. smaller. bent. inverted.

10. Which of the following statements is/are phenomena of refraction? (i) We see ourselves in a plane mirror. (ii) A swimming pool appears to be shallower. (iii)The image of a magnifying lens is dimmer Only (i) Only (ii) Only (i) and (ii) Only (ii) and (iii)