GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 060

GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 060

591). Consider the following statements:
I. Recording of sound on tapes was first invented by poulsen.
II. Audio tapes have magnetic property.
III. The tape is made of cellulose acetate.
IV. The tapes may also be made of polyvinyl chloride.
Of the statements:
A). I,II,III and IV all are correct
B). I,II,III and IV all are wrong
C). I an II are correct, III and IV are wrong
D). I and II are wrong, III and IV are correct

Answer: I,II,III and IV all are correct

   
592). Nodes are
A). positions of maximum displacement
B). positions of no displacement
C). a position between no displacement and maximum displacement
D). none of these

Answer: positions of no displacement


   
593). Consider the following statements :

Assertion (A) : Soft iron is used for magnetic shielding.

Reason (R) : Soft iron attracts the maximum number of magnetic lines of force into it.
Now select your answer according to the coding scheme given below :
A). (A), (R) both are wrong
B). (A), (R) both are right
C). (A) is right, (R) is wrong
D). (A) is wrong, (R) is right

Answer: (A), (R) both are right


   
594). Transformers are used to
A). convert AC into DC
B). convert DC into AC
C). step up DC voltage
D). step up or step down AC voltage

Answer: step up or step down AC voltage


   
595). Consider the following statements :
Assertion (A) : X rays do not affect the photo graphic plate.
Reason (R) : Wavelengths of X-rays are in between 1A to 100A.
Now select your answer according to the coding scheme given below :
A). Both (A) and (R) are true
B). Both (A) and (R) are false
C). (A) is false, and (R) is true
D). (A) is true, and (R) is false

Answer: (A) is false, and (R) is true



596). The instrument used to measure the radioactivity is
A). Geiger counter
B). radio compass
C). radio micrometer
D). radar

Answer: Geiger counter


   
597). The instrument used to test the purify of milk is
A). Galvanometer
B). Calorimeter
C). Lactometer
D). Polarimeter

Answer: Lactometer


   
598). The velocity of a freely falling body
A). decreases
B). increases
C). remains constant
D). may increase or may decrease

Answer: increases


   
599). Consider the following statements :
I. Pressure is measured in Newton per m^2.
II. Stress is the force acting on unit area.
III. Stress and pressure have the same unit.
IV. Stress is 1/3rd of the pressure in an area
Of these :
A). I alone is correct
B). I and II are correct
C). I, II and III are correct
D). All are correct

Answer: I, II and III are correct


   
600). Momentum of a moving body
A). depends upon its mass alone
B). depends upon its velocity alone
C). depends upon both its mass and velocity
D). does not depends upon its mass and velocity

Answer: depends upon both its mass and velocity