GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 118

GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 118

1171). Short sight can be rectified by using
A). concave lens
B). convex lens
C). planoconvex lens
D). planoconcave lens

Answer: concave lens


   
1172). Which of the following rays are produced nuclear changes in the atom?
A). Ultraviolet rays
B). Gamma rays
C). X-rays
D). Infrared rays

Answer: Gamma rays


   
1173). The nucleus of an atom contains
A). neutrons and electrons
B). protons and electrons
C). protons and neutrons
D). neutrons only

Answer: protons and neutrons


   
1174). The effective resistance of the three pectoropo ape 0.2Ω , 0.4Ω and 0.5Ω connected in parallel is
A). 192Ω
B). 219Ω
C). 1.1Ω
D). 11.1Ω

Answer: 219Ω



   
1175). In a camera for a stationary object the shutter speed is
A). 130s
B). 160s
C). 1125s
D). 1250s

Answer: 160s



1176). When water solidifies to ice
A). heat is absorbed
B). heat is released
C). temperature increases
D). temperature decreases

Answer: heat is released


   
1177). The wavelength range of infrared rays is
A). 10^7m to 7.8 x 10^3 m
B). 10^−7m to 7.8 x 10^−3 m
C). 10^−3m to 7.8 x 10^−7 m
D). 10^3m to 7.8 x 10^7 m

Answer: 10^−3m to 7.8 x 10^−7 m


   
1178). Raindrops assume spherical shape due to
A). gravitational force
B). surface tension
C). centrifugal force
D). centripetal force

Answer: surface tension


   
1179). The frequency range of ultrasound is
A). below 20 kHz
B). below 2 kHz
C). above 20 kHz
D). above 20,000 kHz

Answer: above 20 kHz


   
1180). When travelling at the speed of light, one can reach the moon
A). 5 seconds
B). 2 seconds
C). 5 minutes
D). one minute

Answer: 2 seconds