1) Which of the following is an example of rectilinear propagation of light? a) Formation of rainbows b) Image formation in a pinhole camera c) Light bending around a corner d) Reflection off a surface 2) What happens to the path of light when it travels through a uniform medium like air? a) It bends b) It reflects c) It travels in a straight line d) It is absorbed 3) What type of image is formed by a pinhole camera? a) Erect and virtual b) Inverted and real c) Inverted and virtual d) Erect and real 4) A pinhole camera can be used to: a) Study the movement of the sun over a long period b) Study the pupils of the eye c) Both a and b d) Neither a nor b 5) A pinhole camera is placed in a dark room and a candle is lighted 30 cm away. The screen shows a faint image. To make the image brighter without changing the size, one should: a) Move the screen closer to the pinhole b) Move the screen farther from the pinhole c) Increase the pinhole diameter slightly d) Decrease pinhole diameter slightly 6) Which phenomenon explains why a pinhole camera can produce an image even when the light source is not a point? a) Refraction b) Diffraction c) Rectilinear propagation of each ray d) Dispersion 7) If the distance from the pinhole to the screen is halved while the object distance is unchanged, the image size will: a) Halve b) Double c) Remain the same d) Become one-quarter 8) Which of the following is a natural source of light? a) Electric bulb b) Firefly c) Light from a candle d) LED strip 9) Which phenomenon is responsible for the moon appearing bright at night? a) The moon produces its own light. b) The moon reflects light from the Sun. c) The moon absorbs light from the Sun. d) The moon emits a different form of energy that appears as light. 10) A luminous object is an object that: a) Reflects light from other sources. b) Is always a non-living object. c) Absorbs all light that falls on it. d) Generates its own light.

g6physics-ch6-light

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