Physics Practice Question and Answer
8 Q: The splitting of white light into its component colours is called ______.
1374 0642c1a37dcb650c1457945eb
642c1a37dcb650c1457945eb- 1refractionfalse
- 2reflectionfalse
- 3scatteringfalse
- 4Dispersiontrue
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 4. "Dispersion"
Q: Mechanical energy is the sum of potential energy and ______ energy.
1371 064c22eccd3a6d4481eebda27
64c22eccd3a6d4481eebda27- 1kinetictrue
- 2heatfalse
- 3electricalfalse
- 4chemicalfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
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: Is light year unit?
1368 060b4b86af2c446136b8b764e
60b4b86af2c446136b8b764e- 1Timefalse
- 2massfalse
- 3Distancetrue
- 4none of thesefalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 3. "Distance"
Q: Used in solar cooker?
1361 05f6da8ddec13dd74800548f7
5f6da8ddec13dd74800548f7- 1concave mirrortrue
- 2convex mirrorfalse
- 3plane mirrorfalse
- 4None of thesefalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "concave mirror"
Q: What is the color that is used in danger signals?
1356 05fe46a3d57a5647868b6522c
5fe46a3d57a5647868b6522c- 1Yellow colorfalse
- 2Purple colorfalse
- 3Blue colorfalse
- 4Red colortrue
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 4. "Red color"
Q: Parsec is a unit?
1354 060b4b8b37cb636175d3d11e2
60b4b8b37cb636175d3d11e2- 1massfalse
- 2magnetic forcefalse
- 3Timefalse
- 4Distancetrue
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 4. "Distance"
Q: Who found an empirical relationship between the half-life of alpha decay and the energy of the emitted alpha particles in 1911?
1351 0649a9fbcc7d7c7e0672ba384
649a9fbcc7d7c7e0672ba384- 1Fermi and Meitnerfalse
- 2Geiger and Nuttalltrue
- 3Chadwick and Lawrencefalse
- 4Soddy and Astonfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
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 method of transmission of heat is-
1350 05f8fcfb67793eb35d72651bc
5f8fcfb67793eb35d72651bc- 1Conductionfalse
- 2Convectionfalse
- 3Radiationfalse
- 4All of thesetrue
- Show AnswerHide Answer
- Workspace
- SingleChoice