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DUAL NATURE OF RADIATION AND MATTER
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KUMAR PRAKASHAN-DUAL NATURE OF RADIATION AND MATTER-Section-A Try yourself
- Who obtained electromagnetic wave first time in the laboratory ?
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- Who invented X-rays?
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- In 1897 ,J.J Thomson invented which particle?
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- Which scientist invented cathode rays?
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- What is specific charge?Write its standard value.
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- Write speed of cathode rays.
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- Write name of universal and fundamental particle of matter.
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- What is charge on an electron?
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- How mass of an electron can be obtained?
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- Which particles are responsible for conductivity of metal?
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- Define work function of metal and write its unit.
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- Write dimensional formula of electron volt?
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- Define an electron Volt and show it in Joule unit.
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- 1 J is equal to how many electron volt?
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- What is value (magnitude) of electric field required for field emissio...
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- What is photoelectron?
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- What did Hertz observe in experiment to produce electomagnetic waves?
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- In Lenard's experiment what is effect on current when ultraviolet radi...
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- Define threshold frequency.
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- Value of threshold frequency depend on which factors?
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