Physics Quiz 1 (25 MCQs)

Quiz Instructions:

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1. When radioactivity was discovered by Marie Curie?

2. A substance in which all the atoms have the same atomic number is called.

3. A thermostat is a device used in refrigerators and air conditioners to maintain a constant.

4. Which is the softest material?

5. _____ energy consists of moving waves of _____ pressure in medium such as air water or metal.

6. Name the instrument to measure the temperature of an object.

7. Which coloured surface absorbs all light?

8. Most lasers in use today are _____ lasers.

9. Pressure is defined as the force per unit .

10. _____ in liquids is produced the inter-molecular forces between the liquid molecules in the surface.

11. Sound waves with frequencies lower than the lowest limits of human hearing are called.

12. There are _____ basic products of a nuclear reprocessing plant.

13. In solids and liquids the molecules move relatively _____ and interact with each other strongly.

14. There are _____ types of mirrors.

15. Red, blue and green are considered to be the.

16. True solids have definite.

17. Density of an object is the mass of object per unit.

18. Name the basic theory that explains that energy is not continuous but is composed of indivisible quanta.

19. Name the branch of physics which deals with the ways in which object behave when they are acted on by forces.

20. Conduction and convection of heat is possible only with the movement of molecules and.

21. A prism is a triangular block of glass or.

22. Which electricity can be produced by rubbing an insulating material such as a polyethylene rod with a dry cloth?

23. _____ is the smallest particle that can represent a particular chemical element.

24. In 1662, Robert Boyle experimented with the relationship between pressure and.

25. The vapours above a liquid have a pressure called.