GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 112

GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 112

1111). Who discovered electrons?

A). Rutherford

B). Niels Bohr

C). J. J. Thomson

D). Dalton

Answer: J. J. Thomson

   

1112). Grass looks green because

A). it absorbs all colours in the spectrum except green

B). t absorbs only green colour from the spectrum

C). the eye absorbs only green colour from grass

D). none of these is correct

Answer: it absorbs all colours in the spectrum except green

   

1113). A girl is swinging on a swing in a sitting position. If she stands up and swings then the period of oscillation

A). will not be affected

B). will increase

C). will decrease

D). will become zero

Answer: will decrease

   

1114). A hot body will radiate heat most rapidly if its surface is

A). white and polished

B). white and rough

C). black and polished

D). black and rough

Answer: black and rough

   

1115). Pick out the wrong statement from the following:

A). Heat can be reflected by a mirror

B). Heat can be converted into work

C). Heat rays cannot pass through vacuum

D). Heat is a form of energy

Answer: Heat can be reflected by a mirror

1116). Milk inside a thermos flask is stirred vigorously by shaking.

A). its temperature would further increase

B). its temperature would fall slightly

C). its temperature does not change

D). its temperature first increases and than decreases

Answer: its temperature does not change

   

1117). Which of the following has the highest electrical conductivity?

A). Zn

B). Fe

C). Ag

D). Cu

Answer: Ag

   

1118). Sound travels at maximum speed

A). vacuum

B). water

C). air

D). steel

Answer: steel

   

1119). A woman's voice is shriller than a man's voice due to

A). higher frequency

B). higher amplitude

C). lower frequency

D). weak vocal chords

Answer: higher frequency

   

1120). Which one of the following devices converts electrical energy into mechanical energy?

A). Dynamo

B). Transformer

C). Electric motor

D). Inductor

Answer: Electric motor