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SPECIAL FEATURE - TO DAY ON LINE PHYSICS TEST  No:5
 
Choose the correct option from the choices given under the question.
1. Who of the following has been given Nobel Prize for the theory of Super Conductivity in 1913?
  1. Thomas Edison 2. Kamurling Ones
  3. Nuton 4. Fleming
 
2. Which of the following is an example of transparent substance?
  1. wood 2. copper
  3. stone 4. water
 
3. The radius of hydrogen atom
  1. 1.5 Aº 2. 2.5 Aº
  3. .05Aº 4. 0.5 Aº
 
4. In CGS system the units of length are
  1. metres 2. centimetres
  3. decimetres 4. decametres
 
5. Mass is ______ quantity
  1. chemical 2. liquid
  3. scalar 4. vector
 
6. In which of the following speed of the light is more?
  1. Water 2. Glass
  3. Air 4. Space(empty)
 
7. What should be added to make water a good conductor?
  1. Oxygen 2. acid
  3. milk 4. petrol
 
8. The distance between the stars and planets can be measured by ……
  1. using rockets 2. astronomical method
  3. triangulation method 4. using survey chains
 
9. The substance that causes pollution by atomic explosions is _______
  1. Uranium 235 2. Strontium 90
  3. Thorium 91 4. Radium 230
 
10. If the zeroth division of the head scale coincides with the index line of the pitch scale then the correction is _______
  1. Positive 2. Negative
  3. No correction 4. None
 
11. The formula used to calculate the diameter of a wire by the screw gauge having zero error is
  1. P.S.R + H.S.R 2. P.S.R+H.S.R. X LC + or - correction
  3. P.S.R.+H.S.R X L.C 4. P.S.R-H.S.R
 
12. The scale marked on the index of a screw gauge is ________
  1. Screw gauge 2. Screw in a nut
  3. Pitch scale 4. Pitch of the screw
 
13. Kepler's laws support
  1. Heliocentric Theory 2. Geocentric Theory
  3. Both of the above 4. None of these
 
14. The time for which the body remains in air is called
  1. time of ascent 2. time of descent
  3. time of light 4. none
 
15. The radiations used in physiotherapy are
  1. microwaves 2. radio waves
  3. x rays 4. IR radiations
 
16. Satellite communications use ______ radiations
  1. Micro waves 2. Radio waves
  3. UV-Radiation 4. x rays
 
17. A trivalent impurity can also be called as ___________
  1. intrinsic semi-conductor 2. extrinsic semi-conductor
  3. acceptor 4. donor
 
18. Depletion layer is formed by recombination of _________
  1. Electrons and holes 2. Forward bias and reverse bias
  3. p-type material and n-type material 4. Positive ions and negative ions
 
19. The metallic bond between atoms in alkaline earth metals is _______ than in alkali metals.
  1. weaker 2. smoother
  3. stronger 4. bigger
 
20. The magnesium is susceptible to ______
  1. Oxidation 2. Carbonation
  3. Nitration 4. None
 
21. A homogeneous mixture of two or more substances is called _____
  1. Solution 2. Solute
  3. Solvent 4. None
 
22. ___________ consists of a cathode ray beam and photocell.
  1. Kenemoscope 2. Iconoscope
  3. T.V. Receiver 4. Radio
 
23. First Computer generation started in ___________
  1. 1944 2. 1926
  3. 1957 4. 1921
 
24. Which of the following waves gets affected by solar cycle ?
  1. Very low frequency 2. High frequency
  3. Low frequency 4. Very high frequency
 
25. Which one of the nine planet is nearest to Sun ?
  1. Venus 2. Mercuty
  3. Earth 4. Jupiter
 
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