In a telescope the object glass of focal length 14 cm, is located at 20 cm from the diaphragm The focussing lens is midway between them when a staff 1650 m away is focussed The focal length of the focussing lens, is

  1. Home
  2. Back

Question:
  
In a telescope the object glass of focal length 14 cm, is located at 20 cm from the diaphragm The focussing lens is midway between them when a staff 1650 m away is focussed The focal length of the focussing lens, is

1.5.24 cm

2. 6.24 cm

3.7.24 cm

4.8.24 cm

Posted Date:-2021-05-13 08:27:18

More MCQS Questions and answers

  1. If + 0.8% grade meets - 0.7% grade and the rate of change of grade for 30 m distance is 0.05, the length of the vertical curve will be
  2. If the chain line which runs along N-S direction is horizontal and the ground in E-W direction is sloping
  3. The properties of autogenous curve for automobiles are given by
  4. A lens or combination of lenses in which the following defect is completely eliminated is called aplanatic
  5. If the whole circle bearing of a line is 270°, its reduced bearing is
  6. In a perfect prismatic compass
  7. In a telescope the object glass of focal length 14 cm, is located at 20 cm from the diaphragm The focussing lens is midway between them when a staff 1650 m away is focussed The focal length of the focussing lens, is
  8. Locating the position of a plane table station with reference to three known points, is known as
  9. Location of contour gradient for a high way is best set out from
  10. Staff readings on pegs x and y from X station are 1.755 m and 2.850 m, and from station Y on staff head at Y and X are 0.655 m and 1.560 m. If reduced level of X is 105.5 m, the reduced level of Y is
  11. The defect of a lens whereby rays of white light proceeding from a point get dispersed into their components and conveyed to various foci, forming a blurred and coloured image is known as
  12. The line normal to the plumb line is known as
  13. A level when set up 25 m from peg A and 50 m from peg B reads 2.847 on a staff held on A and 3.462 on a staff held on B, keeping bubble at its centre while reading. If the reduced levels of A and B are 283.665 m and 284.295 m respectively, the collimation error per 100 m is
  14. For taking offsets with an optical square on the right hand side of the chain line, it is held
  15. If deflection angles are measured in a closed traverse, the difference between the sum of the right-hand and that of the left hand angles should be equal to
  16. If the declination of the needle is 10° W
  17. It is more difficult to obtain good results while measuringhorizontal distance by stepping
  18. Tilt of the staff in stadia tacheometry increases the intercept if it is
  19. Number of links per metre length of a chain are
  20. Pick up the correct statement from the following :
  21. Pick up the incorrect statement from the following :
  22. Planimeter is used for measuring
  23. Resolving power of a telescope depends on
  24. Stadia techeometry was discovered by James Watt in the year.
  25. Straight, parallel and widely spaced contours represent
  26. The additional lines which are measured to show the correctness of the chain surveying are called
  27. The angle of intersection of a curve is the angle between
  28. The back staff reading on a B.M. of R.L. 500.000 m is 2.685 m. If foresight reading on a point is 1.345 m, the reduced level of the point, is
  29. The bearing of lines OA and OB are 16° 10' and 332° 18', the value of the included angle BOA is
  30. The constant vertical distance between two adjacent contours, is called
  31. The correction to be applied to each 30 metre chain length along θ° slope, is
  32. The included angles of a theodolite traverse, are generally measured
  33. The method generally preferred to for contouring an undulating area, is
  34. The reduced level of a floor is 99.995 m, the staff reading on the floor is 1.505 m. If the inverted staff reading against the roof is 1.795 m, the floor level below the slab, is
  35. The staff reading at a distance of 80 m from a level with the bubble at its centre is 1.31 m. When the bubble is moved by 5 divisions out of the centre, the reading is 1.39 m. The angular value of the one division of the bubble, is
  36. The theodolites used for making tacheometric observations by optical wedge system, are
  37. To orient a plane table at a point with two inaccessible points, the method generally adopted, is
  38. Under ordinary conditions, the precision of a theodolite traverse is affected by
  39. While setting a plane table at a station it was found that the error in centering was 30 cm away from the ray of length 40 m drawn from the station. If the scale of the plan is 1 cm = 2 cm, the displacement of the end of the ray in plan from the true position will be
Search
R4R Team
R4Rin Top Tutorials are Core Java,Hibernate ,Spring,Sturts.The content on R4R.in website is done by expert team not only with the help of books but along with the strong professional knowledge in all context like coding,designing, marketing,etc!