102. Cyclotron is a device which: [CDS 1999]
       (a) detects and analyses the spectrum of light emitted by stars
       (b) accelerates subatomic particles using combined electric and magnetic fields
       (c) detects the cyclic variation in the intensity of electromagnetic radiation emitted from stars
       (d) measures the intensity of X-rays
Ans : (b)
103. Machine parts get jammed in winter, because: [CDS 1999]
       (a) the viscosity of the lubricant used in machine parts increases with the decrease in temperature
       (b) the viscosity of lubricant used in machine parts decreases with the decrease in temperature
       (c) the inertia of machine parts decreases with the decrease in temperature
       (d) the inertia of machine parts increases with the decrease in temperature
Ans : (b)
104. Usually light travels faster than sound. However, when we switch a television set on the picture comes later than the sound. The
     reason is that: [CDS 1999)
       (a) in IV transmission sound is transmitted first and picture is transmitted later
       (b) there is always a delay in the picture tube getting switched on
       (c) emission of electrons from the picture tube takes time
       (d) the wiring for picture tube is much longer compared to that for the speaker
Ans : (c)
105. Which one of the following pairs with respect to computer is not correctly matched? [CDS 2010]
       (a) 1 megabyte: bytes
       (b) Compiler : A programme which translates a high-level language programme into machine language
       (c) Liveware : The users working on the system
       (d) Plotter : An electronic device "used to convert digital electronic signals to communication channel electronic signals and vice
             versa
Ans : (d)
106. If the temperature of a semiconductor rises, its resistivity will : [CDS 2003]
       (a) increase
       (b) decrease
       (c) remain constant
       (d) reduce to zero
Ans : (b)
107. "mho" is the unit of: [CDS 2002]
       (a) resistance
       (b) specific resistance
       (c) conductivity
       (d) None of the above
Ans : (b)
108. When an earth satellite dissipates energy, it moves to a : [CDS 2002]
       (a) lower orbit and its kinetic energy increases
       (b) higher orbit and its kinetic energy decreases
       (c) lower orbit and its kinetic energy decreases
       (d) higher orbit and its kinetic energy increases
Ans : (b)
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