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SPECIAL FEATURE - TO DAY ON LINE PHYSICS TEST  No:7
 
Choose the correct option from the choices given under the question.
1. Which of the following is not a super conductor?
  1. Silver 2. Alluminium
  3. Copper 4. Mica
 
2. The substances which allow light to pass through them are :
  1. Opaque substances 2. Transparent substances
  3. Solid substances 4. Translucent substance
 
3. The mean distance of sun from the earth is called
  1. astronomical units 2. lightyear
  3. astrological units 4. angstroms
 
4. In MKS system the units of mass are
  1. grams 2. pound
  3. tons 4. kilograms
 
5. In FPS system the units of time
  1. nm 2. minutes
  3. hours 4. seconds
 
6. The time interval between two succesive passeges of the sun across the meridian of earth at a place is defined as______
  1. lunar day 2. day
  3. solarday 4. sydereal day
 
7. What instrument is used to hear the heart beat?
  1. Periscope 2. Galvanoscope
  3. Telescope 4. Stethoscope
 
8. The method of measuring distances by forming a triangle is called:
  1. Triangulation method 2. Graphical method
  3. Survey method 4. Astronomical method
 
9. When fuel is ignited in vehicles it exists:
  1. Dust 2. Oxygen
  3. Carbon monoxide 4. Water vapour
 
10. If a screw gauge moves 5mm distance in 5 revolutions then the pitch of the screw gauge is _______
  1. 1mm 2. 2mm
  3. 1.5mm 4. .5mm
 
11. The formulae used to calculate the zero error of a screw gauge
  1. coinciding division X L.C. 2. P.S.R +H.S.R x L.C
  3. x/n 4. P.S.R+H.S.R
 
12. No of scales in a screw gauge are __________
  1. 1 2. 2
  3. 3 4. 4
 
13. The distance travelled by the tip of a screw for one complete rotation of its head is called the ___________
  1. Screw gauge 2. Screw nut
  3. Pitch of the screw 4. Pitch Scale
 
14. The time taken by the body thrown up to reach its maximum height is called
  1. time of descent 2. time of ascent
  3. time of flight 4. none
 
15. The electromagnetic radiation observed in radioactivity is ____
  1. a - particles 2. B - particles
  3. y - rays 4. x - rays
 
16. The electromagnetic radiations used in micro waves are
  1. Radio Waves 2. X rays
  3. Micro waves 4. y rays
 
17. Width of depletion layer _______ when the diode is reverse biased.
  1. increase 2. decrease
  3. remains same 4. disappears
 
18. The energy gap in germanium crystal is __________
  1. 0 ev 2. 0.72 ev
  3. 1.1 ev 4. 6.1 ev
 
19. The alkaline earth metal which is radioactive is ___________
  1. Radium 2. Barium
  3. Magnesium 4. Thorium
 
20. Chlorides of Mg.,Ca,Sr, and Ba are _________ and soluble in __________.
  1. ionic, petrol 2. static, water
  3. ionic, water 4. none
 
21. Four grams of NaOH (Mol.wt. = 40) is dissolved in 34.2 grams of water (Mol.wt.=18). The mole fraction of NaOH is _______
  1. 0.1 2. 0.2
  3. 0.05 4. 0.025
 
22. The process of fixing message signals to r.f. carrier wave is called _________
  1. detection 2. modulation
  3. demodulation 4. scanning
 
23. Mouse in the computer is a ___________
  1. Control Unit 2. Memory Unit
  3. Input Device 4. Output Device
 
24. Two rods with length 20.123 cm and 18.1 cm are placed side by side. The difference in their length is
  1. 2 cm 2. 2.0 cm
  3. 2.02 cm 4. 2.023 cm.
 
25. A charged particle moving at right angle to the electric field follows
  1. parabolic path 2. circular path
  3. linear path 4. elliptical path
 
  TOTAL MARKS: 0       GRADING:
 
Color Codes:
Right Choice
 
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