GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 043

GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 043

421). Which one of the following remains constants while throwing a ball upward ?
A). Displacement
B). Kinetic energy
C). Acceleration
D). Velocity

Answer: Acceleration

   
422). A proton and an electron having equal velocity are allowed to pass through a uniform magnetic field. Which one of the following statements is correct in this connection?
A). The proton and the electron experience equal and opposite force
B). The proton experiences greater force than does the electron
C). The electron experiences more force than does the proton
D). No moving charged particle experiences a force in a magnetic field

Answer: The proton and the electron experience equal and opposite force


   
423).

A ray of light moment normally on one of the faces of right angled isosceles prism as shown above. It undergoes total internal reflection from hypotenuse. Which one of the following is the minimum refractive index of the material of the prism?
A). 1.0
B). 1.33
C). 1.414
D). 1.6

Answer: 1.414


   
424). If a body travels half the distance with velocity v1
and next half with velocity v2, then which one of the following be the average velocity of the body?
A). √V1V2
B). (v1+v2)/2
C). v2/V1
D). (2v1v2)/(v1+v2)

Answer: (2v1v2)/(v1+v2)


   
425). What is the correct sequence in which lengths of the following units increase ?
1. Angstrom
2. Micron
3. Nanometer
Select the correct answer using the code given below :
A). 1,2,3
B). 3,1,2
C). 1,3,2
D). 2,3,1

Answer: 1,3,2



426). Flow velocities in an incompressible fluid can be measured with which one of the following ?
A). Barometer
B). Venturi tube
C). Strain gague
D). Manometer

Answer: Venturi tube


   
427). Match List I with List II and select the correct answer using the code given below the lists:
List I                                                                        List II
A. Explanation of the photoelectric effect            1. J.J.Thomson
B. Discovery of a comet                                    2. Robert Millikan
C. Measurement of the electronic charge            3. Einstein
D. Thermoelectricity                                         4. Edmund Halley
                                                                      5. Seebeck

Below codes are given in order A B C D
A). 3 2 4 5
B). 5 1 4 3
C). 5 4 1 3
D). 3 4 2 5

Answer: 3 4 2 5


   
428). What is the number of water molecules present in a tiny drop of water (volume 0.0018 m1) at room temperature?
A). 4.84×10^17
B). 4.184×10^18
C). 6.023×10^19
D). 6.023×10^23

Answer: 6.023×10^19



   
429). Consider the following :
Heat produced in a conductor carrying current is independent of
1. current passing through it.
2. thermal conductivity.
3. specific resistance.
Which of the statements given above is/are correct?
A). 1 and 3
B). 2 only
C). 1 and 2
D). 2 and 3

Answer: 2 only


   
430). Which one of the following is the range frequency used in optical communication?
A). 10^3−10^4 Hz
B). 10^8−10^9 Hz
C). 10^13−10^14 Hz
D). 10^16−10^17 Hz

Answer: 10^13−10^14 Hz