Grade 11 Physics Quiz 1

All visible objects either …….. or reflect light

• emit

• transfer

• absorb

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According to Einstein’s theory, light consists of particles called …….

• electrons

• protons

• photons

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Scientists now agree that …………. has a dual nature, part particle and part wave

• single

• dual

• triple

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According to …….., light coming from Jupiter’s moon Io takes a longer time to reach Earth at a

certain position

• Albert Michelson

• Christian Huygens

• Olaus Roemer

According to …….., speed of light is 300 000 km/s

• Albert Michelson

• Christian Huygens

• Olaus Roemer

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…………… used mirror arrangements to measure the speed of light

• Albert Michelson

• Christian Huygens

• Olaus Roemer

Michelson’s experimental value for the speed of light was …… km/s

• 399,920

• 199,920

• 299,920

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The energy that travels in a wave that is partly electric and partly magnetic is called …..

• X-rays

• radio waves

• electromagnetic waves

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The range of electromagnet waves are called …….

• electromagnet spectrum

• electromagnetic induction

• electromagnetic particles

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Electromagnetic waves of frequencies lower than the red of visible light are called …….

• ultraviolet

• infrared

• gamma rays