Match the LIST-I with LIST-II
| LIST-I | LIST-II | ||
|---|---|---|---|
| (Optical Device) | (Application) | ||
| A. | Compound Microscope | I. | To facilitate visual examination of internal organs like intestines |
| B. | Optical Fibers | II. | To invert image without changing its size |
| C. | Astronomical Telescope | III. | To see distant objects |
| D. | Prism | IV. | To see tiny objects |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → A-IV, B-I, C-III, D-II
Each optical device is chosen for what it does to the light or to the image.
(A) Compound Microscope — this matches (IV) To see tiny objects. It gives a large magnification of a small object placed close to it.
(B) Optical Fibers — this matches (I) To facilitate visual examination of internal organs like intestines. Light is carried along the fibre by repeated total internal reflection, which is the basis of the endoscope.
(C) Astronomical Telescope — this matches (III) To see distant objects. It increases the angle subtended at the eye by far-away objects such as stars and planets.
(D) Prism — this matches (II) To invert image without changing its size. A right-angled isosceles prism totally reflects the light and turns the image upside down without magnifying it, as in binoculars.
NCERT (2026-27):
The Microscope – “… For much larger magnifications, one uses two lenses, one compounding the effect of the other. This is known as a compound microscope.”
Total Internal Reflection in Nature and Its Technological Applications – “… Obviously, optical fibres can also be used for transmission of optical signals. For example, these are used as a ‘light pipe’ to facilitate visual examination of internal organs like esophagus, stomach and intestines.”
Total Internal Reflection in Nature and Its Technological Applications – “… (i) Prism: Prisms designed to bend light by 90° or by 180° make use of total internal reflection [Fig. 9.13(a) and (b)]. Such a prism is also used to invert images without changing their size [Fig. 9.13(c)].”
Telescope – “The telescope is used to provide angular magnification of distant objects (Fig. 9.25).”