Quiz 136: General Science : Some Basic Concepts of Physics - General Knowledge Today

## Quiz 136: General Science : Some Basic Concepts of Physics

1.Which among the following defines gravitational mass?
(A)Ratio of weight of a body and acceleration due to gravity
(B)Ratio of Acceleration due to gravity and weight of a body
(C)matter contained in a body

2.What is a power of a normal person?
(A)0.05-0.10 HP
(B)0.01-0.05 HP
(C)0.5 HP-.75 HP

3.The value of acceleration due to gravity is __________?
(A)minimum at equator and maximum at poles
(B)maximum at equator and minimum at poles
(C)equal at poles and equator

4.What is the mean value of g at earth's surface?
(A).98 meter per second
(B)9.8 meter per second
(C)9.8 meter per second square

5.Which of the following term denotes the internal reaction force per unit area developed as a result of applied external force ?
(A)Stress
(B)Friction
(C)Moment of Inertia

6.Which among the following defines cohesive force?
(A)the force of attraction acting between the molecules of same material
(B)the force of attraction acting between the molecules of different material
(C)the force of attraction acting between the atoms of same material

7.The ideal fluid which is a hypothetical fluid should contain _______?
(A)Zero Viscosity Only
(B)Zero Compressibility Only
(C)Zero Viscosity & Zero Compressibility

8.A molecule is a smallest part of matter which possesses all properties of original matter. A molecule is electrically _________?
(A)positive
(B)either positive or negative
(C)neutral

9.Which among the following is true about conduction, convection and radiation mode of transfer of heat?
(A)A Medium is required for conduction but not required for convection and radiation
(B)A medium is required for conduction, convection and radiation
(C)A medium is required for conduction and convection but not required for radiation

10.Which among the following is true regarding Sound Waves?
(A)They are longitudinal waves and material medium is not required for their propagation
(B)They are transverse waves and material medium is required for their propagation
(C)They are longitudinal waves and material medium is required for their propagation

11.Which among the following principle is used by Bats?
(C)law of reflection

12.Which among the following is true about Total Internal Reflection?
(A)A ray passing from rarer to denser medium and not able to pass to denser medium at an angle greater than critical angle
(B)A ray passing from denser to rarer medium and not able to pass to rarer medium at an angle greater than critical angle
(C)A ray passing from either denser to rarer medium or rarer to denser medium and not able to pass any medium at an angle smaller than critical angle

13.When light from some sources enters to the earth's atmosphere, it gets scattered. Which among the following is a reason behind scattering?
(A)Various wavelengths of light
(B)dust, smoke and gas molecules
(C)atmospheric pressure

14.Which among the following is right full form of LASER?
(A)Light Acceleration by Stimulated Emission of Radiation
(B)Light Amplification by Stimulated Emission of Radiation
(C)Light Acceleration by Stimulated Energy of Radiation

15.Which among the following is true about latent heat ?
(A)It causes change in temperature as well as change in state or phase
(B)It causes change in temperature only
(C)It causes change in state or phase but not in temperature

16.Which among the following is a property of Insulator?
(A)The electrons of the outer orbits are loosely bound to the nucleus , however can not flow through them
(B)The electrons of the outer orbits are tightly bound to the nucleus and can not flow through them
(C)The electrons of the outer orbits are loosely bound to the nucleus , and can flow through them

17.Equal volumes of all gases contain equal number of molecules under similar conditions of temperature and pressure. Which law says this ?
(A)Boyle's law
(B)Charles law

18.The focal length of a concave lens is ______?
(A)negative
(B)positive
(C)either positive or negative

19.In which of the following cells chemical process is reversible ?
(A)Voltaic Cell
(B)Dry Cell

20.Ohm is a unit of measuring _________?
(A)resistance
(B)voltage
(C)current

Last Updated: January 31, 2012

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7. sandeep (odisha) says:

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8. shubham says:

Q 12: critical angle is the angle of incidence above which total internal reflection occurs

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