Choose the correct statement
Q. Choose the correct statement. (A) Wavelength of red light is less than violet light. (B) Wavelength of red light is more than violet ligh...
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Showing posts with label Physics. Show all posts
Showing posts with label Physics. Show all posts
Frequency is measured in
Q. Frequency is measured in (A) hertz (B) meter/ second (C) radian (D) watt (E) None of the above/More than one of the above Answer. hertz ...
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Angstrom is a unit of
Q. Angstrom is a unit of (A) wavelength (B) energy (C) frequency (D) velocity (E) None of the above/More than one of the above Answer. Wave...
Read more »As you go down into a well, your weight
Q. As you go down into a well, your weight increases slightly decreases slightly remains exactly the same None of the above Answer: Decreas...
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The sound will have highest velocity in
Q. The sound will have the highest velocity in Vacuum Air Water Steel Answer: Steel Speed of sound in normal air is 343 m/s. In water the s...
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Which of the following has the highest velocity?
Q. Which of the following has the highest velocity? Cosmic rays Light Electron Supersonic wave Answer: Light The speed of light in a vacuum...
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A sound of single frequency is called
Q. A sound of single frequency is called tone note intensity wavelength Answer: Tone The only sound which consists of a single frequency...
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Soldering of two metals is possible because of the property of:
Q. Soldering of two metals is possible because of the property of: viscosity surface tension osmosis cohesion Answer: Cohesion Cohesion o...
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What type of em wave used in aircraft radar.
Q. Name the EM waves which are suitable for radar systems used in aircraft navigation. Write the range of frequency of these waves. Microwa...
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The density of a gas is maximum at
Q. The density of a gas is maximum at Low temperature, low pressure Low temperature, high pressure High temperature, low pressure High tempe...
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The oil in the wick of an oil lamp rises up due to:
Q. The oil in the wick of an oil lamp rises up due to: gravitational force pressure difference capillary action low viscosity of oil Answer:...
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Spectacles used for viewing 3D films have
Q. Spectacles used for viewing 3D films are Polaroids Concave lens Convex lens Bifocal lens Answer: Polaroids Polaroids spectacles are used...
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Why water boils at a lower temperature at higher altitudes?
Q. Water boils at a lower temperature on the hills because there is less carbon dioxide on the hills it is cold on the hills there is a decr...
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Hydrogen bomb is based on the principle of
Q. Hydrogen bomb is based on the principle of nuclear fission nuclear fusion natural radioactivity artificial radioactivity Answer: B The H...
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A linear force-deformation relation is obtained in materials
Q. A linear force-deformation relation is obtained in materials Having elastic stress-strain property Having plastic stress-strain property ...
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Which part of the electromagnetic spectrum has the shortest wavelength?
Q. Which part of the electromagnetic spectrum has the shortest wavelength? Answer: Gamma Rays The electromagnetic waves with shortest wave...
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The device which converts sound energy into electrical energy is called
Q. The device which converts sound energy into electrical energy is called A. Speaker B. Amplifier C. Microphone D. Transmitter Answer: Mic...
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What are some examples of diffraction?
Diffraction & Its Examples Diffraction is a physics concept. Diffraction occurs when waves bend around small obstacles, or when waves sp...
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The critical temperature above which ferromagnetic materials lose their magnetic property is called
Q. The critical temperature above which ferromagnetic materials lose their magnetic property is called A. Kelvin Point B. Curie Point C. ...
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What is the difference between mass and weight?
Difference Between Mass and Weight Mass is a measurement of the amount of matter something contains, while weight is the measurement of th...
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