MCQ Chapter 17 General Science Class 7 Maharashtra Board MCQ For All Chapters – General Science Class 7 Effects of Light 1. What happens when sunrays pass through a glass prism? They turn black A band of colors is seen They disappear A single color emergesQuestion 1 of 202. Why can we see a beam of light in a dusty room? Light reflects off the walls Dust particles scatter the light The beam is naturally visible The air glowsQuestion 2 of 203. What is required to see a laser beam in water? Clear water Sugar solution Turbid water with milk Salt waterQuestion 3 of 204. Why does the sky appear bright during the day? The sun is directly overhead Scattering of sunlight by air particles Absence of clouds Reflection from the groundQuestion 4 of 205. Why does the sky appear dark from space? No sunlight reaches space Lack of atmosphere to scatter light The Earth blocks light Space absorbs lightQuestion 5 of 206. What color is most scattered by the atmosphere? Red Yellow Blue GreenQuestion 6 of 207. Why does the sun appear red at sunset? Blue light is less scattered Red light travels a shorter distance More scattering of blue leaves red-yellow light The atmosphere turns redQuestion 7 of 208. What is seen when observing turbid water with milk at a 90° angle? Red light Blue tinge Yellow light No colorQuestion 8 of 209. What type of bulb is needed for the scattering experiment? LED 60 or 100 W milky bulb Fluorescent Laser bulbQuestion 9 of 2010. What is a shadow? A reflection of light An area where light is blocked Scattered light A beam of lightQuestion 10 of 2011. What is a point source of light? A large bulb Light from a tiny hole A laser beam SunlightQuestion 11 of 2012. What is the dark part of a shadow called? Penumbra Umbra Beam ScatteringQuestion 12 of 2013. What is the faint part of a shadow from an extended source? Umbra Penumbra Reflection EclipseQuestion 13 of 2014. What happens to the umbra of a small ball as the screen moves further away? It grows larger It stays the same It becomes smaller and disappears It turns into penumbraQuestion 14 of 2015. When does a solar eclipse occur? When the Earth is between the Sun and Moon When the Moon is between the Sun and Earth On a full moon night During a lunar eclipseQuestion 15 of 2016. On which day is a solar eclipse seen? Full moon day New moon day Half moon day Any dayQuestion 16 of 2017. What type of solar eclipse occurs when the Moon fully covers the Sun? Partial Total Lunar PenumbraQuestion 17 of 2018. Why should a solar eclipse not be watched with the naked eye? It causes headaches Harmful ultraviolet rays reach Earth The light is too dim It scatters blue lightQuestion 18 of 2019. When does a lunar eclipse occur? When the Moon is between the Sun and Earth When the Earth is between the Sun and Moon On a new moon day During the dayQuestion 19 of 2020. On which night is a lunar eclipse visible? New moon night Full moon night Half moon night Any nightQuestion 20 of 20 Loading...
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