Optical Instruments Mcqs
This collections of Multiple choice questions and answers focuses on study of Optical Instruments in Physics. These questions are chosen from a collection of most authoritative and best reference books on Physics. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, MDCAT, Teaching jobs Tests and Chemical industry job interviews. One should practice our Mcqs to assimilate knowledge on Optical Instruments in Physics comprehensively.
32. The function of collimeter in spectrometer is
To produce parallel beams of light
To filter the light rays
To make them
No function
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
33. The least distance of distinct vision for a normal eye is
15 cm
25 cm
30 cm
40 cm
34. The minimum distance between an object and its real image in a convex lens is
2 f
2.5 f
3f
4f
35. The power of a concave lens is
Real
Virtual
Positive
Negative
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
36. The value of critical angle for glass is
42?
47?
52?
50?
37. There is no noticeable boundary between core and cladding
Multi mode step index fibre
Multi mode graded index fibre
Single mode step index fibre
All types of fibre
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
38. Two convex lenses of equal focal length f are placed in contact the resultant focal length of the combination is
Zero
Focus
2 f
F/2
39. Unit of power of a lens is
Meter
Watt
Dioptre
Horsepower
40. Which one type of fibre is more suitable for transmission of signals in which white light is used ?
Mono mode step index fibre
Multi mode step index fibre
Multi mode graded index fibre
Single mode step index fibre
Answer & Solution
No Solution for this Answer..! Report or Discus this Question