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General Awareness on Science | GK Objective Questions and Answers on Physics

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Science General Knowledge objective questions and answers on Physics page contain 5 questions. Each General Knowledge mcq has 4 possible answers. Choose your answer and check it with the given correct answer.
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(6) Which of the following is related to threshold frequency ?
[A] Photo current decreases with voltage
[B] Photo electric emission is not possible
[C] Photo current increases with voltage
[D] Photo current is constant

Comment

Answer: Option [B]
(7) The instrument used to study the laws of vibrating string is :
[A] Hydrometer
[B] Hygrometer
[C] Sonometer
[D] Electrometer

Comment

Answer: Option [C]

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(8) Which device is used to measure the wavelength of X-rays ?
[A] Framing square
[B] Spectrometer
[C] Manometer
[D] SWR meter

Comment

Answer: Option [B]
(9) The hydraulic press depends upon :
[A] Coulomb's law
[B] Pascal's principle
[C] Boyle's law
[D] Bernouli's principle

Comment

Answer: Option [B]
(10) The Newton's first law is also referred to as :
[A] Law of inertia
[B] Law of friction
[C] Law of moments
[D] Law of motion

Comment

Answer: Option [A]

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