Quiz's for General Studies(GK) for Civil Service Exams 17 12

## September 27, 2014

### Quiz 16- Physics -General Science: General Knowledge Question & Answers

151 Q) "In the electric supply lines in India, which parameter is kept constant? (CDS 2007) "

(a)Current
(b) Voltage
(c) Power
(d) Frequency

152 Q) "Stars are twinkling due to "

(a) diffraction
(b) refraction
(c) scattering
(d) reflection

153 Q) "Assertion (A): The ammeter is always connected in series whereas a voltmeter is connected in parallel.
Reason (R): An ammeter is a low-resistance galvanometer while a voltmeter is high resistant galvanometer."

(a)Both A and R are true and R is the correct explanation of A
(b)Both A and R are true but R is not the correct explanation of A
(c)A is true but R is false
(d)A is false but R is true

154 Q) "Which one of the following mechanisms uses the Pascal's law?. "

(a)The flight take-off
(b)The floating of ship
(c)The hydraulic brakes
(d)The landing of flight

155 Q) " Assertion (A) The roads made spiral at the mountains.
Reason (R) This is done to save the vehicle from burning over. "

(a)Both A and R are true and R is the correct explanation of A
(b)Both A and R are true but R is not the correct explanation of A
(c)A is true but R is false
(d)A is false but R is true

156 Q) Two boats are moving in same direction in a river. What is the best condition so that the move parallel in the same direction?.

(a)They should move parallel
(b)They should slightly bend to each other
(c)They should move away from each other
(d)It is not possible

157 Q) "Consider the following statements
I. The energy of stars are due to nuclear fission reaction.
II. The reflection of light causes the twinkling of stars. Which of the statements given above is/are correct? "

(a) Only I
(b) Only II
(c) Both I and II
(d) Neither I nor II

158 Q) Match List I with List II and select the correct answer using the codes given below the list
 List-l  (Waves) List II  (Applications) A. Electromagnetic Wave 1. Acoustic Radar B. Longitudinal Wave 2. Surgery using Laser C. Matter wave 3. Electron Microscope D. Elastic wave 4. Musical Instrument
(a) 2 4 3 1
(b) 2 3 4 1
(c) 4 3 1 2
(d) 4 1 3 2

159 Q) "Light Emitting Diode (LED) converts "

(a)light energy, into electrical energy
(b)electrical energy into light energy
(c)thermal energy into light energy
(d)mechinical energy into electrical energy

160 Q) "Two thin wooden sticks are floating on the surface of water close to each other. A hot needle touches the water between them. How will the sticks react to it? "

(a)They will come closer
(b)They will move apart
(cj They will move critically
(d)They will stay as before
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