GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 146
1451). The principle of gravitational lenses is
A). reflection of light
B). refraction of light
C). polarisation of light
D). bending of light around masses
Answer: bending of light around masses
1452). Liquid helium can reduce the temperature of the coil in MRI Equipment to around
A). 40 K
B). 4 K
C). 273 K
D). 0°C
Answer: 4 K
1453). Which of the following statements is/are correct?
1) A fuse wire is made of 37% lead and 63% tin
2) A fuse wire is made of 63% lead and 37% tin
3) A fuse wire has high resistance and low melting point
4) A fuse wire has low resistance and high melting point
A). 1, 4 are correct statements
B). 2, 3 are correct statements
C). 1, 3 are correct statements
D). 2, 4 are correct statements
Answer: 1, 3 are correct statements
1454). Rain drop starts to fall down when the velocity of the drop is
A). equal to terminal velocity
B). greater than terminal velocity
C). lesser than terminal velocity
D). greater than critical velocity
Answer: greater than terminal velocity
1455). Consider the following statements.
Assertion (A): Anemometer is a device used for measuring rainfall.
Reason (R): It has aluminium cups which turn on a spindle.
Select your answer according to the coding scheme given below.
A). Both (A) and (R) are true and (R) is the correct explanation of (A)
B). Both (A) and (R) are true and (R) is not the correct explanation of (A)
C). (A) is true but (R) is false
D). (A) is false but (R) is true
Answer: (A) is false but (R) is true
1456). Consider the following statements.
Assertion (A): The energy spent in Magnetising a specimen is not recoverable and there occurs a loss of energy in the form of heat.
Reason (R): During a cycle of magnetisation the molecular magnets in a specimen are oriented and reoriented a number of times.
Select your answer according to the coding scheme given below.
A). Both (A) and (R) are true also (R) is the correct explanation of (A)
B). Both (A) and (R) are true also (R) is not the correct explanation of (A)
C). (A) is true but (R) is false
D). (A) is false but (R) is true
Answer: Both (A) and (R) are true also (R) is the correct explanation of (A)
1457). Who has developed and demonstrated the first nuclear reactor in the year 1942?
A). Bhor and Wheeler
B). Enrico Fermi
C). Albert Einstein
D). Bhor and Mottleson
Answer: Enrico Fermi
1458). The Young's modulus of carbon Nanotubes (CNT) ranges from
A). 1.68 to 2 Tpa
B). 1.28 to 1.8 Tpa
C). 0.168 to 0.2 Tpa
D). 0.128 to 0.18 Tpa
Answer: 1.28 to 1.8 Tpa
1459). The telescope used for the research of supernovae is
A). Hubble space telescope
B). Chandrasekar space telescope
C). Hertzberg space telescope
D). Russel space telescope
Answer: Hubble space telescope
1460). The ratio of the intensity of magnetisation to the applied magnetic field strength is known as magnetic
A). Susceptibility
B). Co-ercivity
C). Retentivity
D). Permeability
Answer: Susceptibility
A). reflection of light
B). refraction of light
C). polarisation of light
D). bending of light around masses
Answer: bending of light around masses
1452). Liquid helium can reduce the temperature of the coil in MRI Equipment to around
A). 40 K
B). 4 K
C). 273 K
D). 0°C
Answer: 4 K
1453). Which of the following statements is/are correct?
1) A fuse wire is made of 37% lead and 63% tin
2) A fuse wire is made of 63% lead and 37% tin
3) A fuse wire has high resistance and low melting point
4) A fuse wire has low resistance and high melting point
A). 1, 4 are correct statements
B). 2, 3 are correct statements
C). 1, 3 are correct statements
D). 2, 4 are correct statements
Answer: 1, 3 are correct statements
1454). Rain drop starts to fall down when the velocity of the drop is
A). equal to terminal velocity
B). greater than terminal velocity
C). lesser than terminal velocity
D). greater than critical velocity
Answer: greater than terminal velocity
1455). Consider the following statements.
Assertion (A): Anemometer is a device used for measuring rainfall.
Reason (R): It has aluminium cups which turn on a spindle.
Select your answer according to the coding scheme given below.
A). Both (A) and (R) are true and (R) is the correct explanation of (A)
B). Both (A) and (R) are true and (R) is not the correct explanation of (A)
C). (A) is true but (R) is false
D). (A) is false but (R) is true
Answer: (A) is false but (R) is true
1456). Consider the following statements.
Assertion (A): The energy spent in Magnetising a specimen is not recoverable and there occurs a loss of energy in the form of heat.
Reason (R): During a cycle of magnetisation the molecular magnets in a specimen are oriented and reoriented a number of times.
Select your answer according to the coding scheme given below.
A). Both (A) and (R) are true also (R) is the correct explanation of (A)
B). Both (A) and (R) are true also (R) is not the correct explanation of (A)
C). (A) is true but (R) is false
D). (A) is false but (R) is true
Answer: Both (A) and (R) are true also (R) is the correct explanation of (A)
1457). Who has developed and demonstrated the first nuclear reactor in the year 1942?
A). Bhor and Wheeler
B). Enrico Fermi
C). Albert Einstein
D). Bhor and Mottleson
Answer: Enrico Fermi
1458). The Young's modulus of carbon Nanotubes (CNT) ranges from
A). 1.68 to 2 Tpa
B). 1.28 to 1.8 Tpa
C). 0.168 to 0.2 Tpa
D). 0.128 to 0.18 Tpa
Answer: 1.28 to 1.8 Tpa
1459). The telescope used for the research of supernovae is
A). Hubble space telescope
B). Chandrasekar space telescope
C). Hertzberg space telescope
D). Russel space telescope
Answer: Hubble space telescope
1460). The ratio of the intensity of magnetisation to the applied magnetic field strength is known as magnetic
A). Susceptibility
B). Co-ercivity
C). Retentivity
D). Permeability
Answer: Susceptibility
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