Physics Questions Practice Question and Answer
8 Q: The splitting of white light into its component colours is called ______.
1350 0642c1a37dcb650c1457945eb
642c1a37dcb650c1457945eb- 1refractionfalse
- 2reflectionfalse
- 3scatteringfalse
- 4Dispersiontrue
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Answer : 4. "Dispersion"
Q: Used in solar cooker?
1348 05f6da8ddec13dd74800548f7
5f6da8ddec13dd74800548f7- 1concave mirrortrue
- 2convex mirrorfalse
- 3plane mirrorfalse
- 4None of thesefalse
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Answer : 1. "concave mirror"
Q: Mechanical energy is the sum of potential energy and ______ energy.
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64c22eccd3a6d4481eebda27- 1kinetictrue
- 2heatfalse
- 3electricalfalse
- 4chemicalfalse
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Answer : 1. "kinetic"
Explanation :
1. Mechanical energy is a combination of kinetic energy and potential energy.
2. Mechanical energy is defined as the sum of kinetic energy and potential energy used to do work on an object.
3. Mechanical energy is the form of energy that is related to the position and motion of an object.
Q: Parsec is a unit?
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60b4b8b37cb636175d3d11e2- 1massfalse
- 2magnetic forcefalse
- 3Timefalse
- 4Distancetrue
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Answer : 4. "Distance"
Q: What is the color that is used in danger signals?
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5fe46a3d57a5647868b6522c- 1Yellow colorfalse
- 2Purple colorfalse
- 3Blue colorfalse
- 4Red colortrue
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Answer : 4. "Red color"
Q: The method of transmission of heat is-
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5f8fcfb67793eb35d72651bc- 1Conductionfalse
- 2Convectionfalse
- 3Radiationfalse
- 4All of thesetrue
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Answer : 4. "All of these"
Q: Who found an empirical relationship between the half-life of alpha decay and the energy of the emitted alpha particles in 1911?
1331 0649a9fbcc7d7c7e0672ba384
649a9fbcc7d7c7e0672ba384- 1Fermi and Meitnerfalse
- 2Geiger and Nuttalltrue
- 3Chadwick and Lawrencefalse
- 4Soddy and Astonfalse
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Answer : 2. "Geiger and Nuttall "
Explanation :
In 1911, Geiger and Nuttall discovered an empirical relationship between the half-life of alpha decay and the energy of the emitted alpha particles.
Q: The value of the velocity of sound is the lowest.
1330 05f8fd0813ca2d767b181f610
5f8fd0813ca2d767b181f610- 1Solidfalse
- 2Liquidfalse
- 3Gasestrue
- 4All of thesefalse
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