Find the Fundamental and Concept orientated TRB physics questions in Optics.
| SI NO. | QUESTIONS | ANSWERS |
| 1. | The point on the principal axis through which all rays will pass un deviated? | Optical centre |
| 2. | The planes passing through the principal axis are called? | Principal plane |
| 3. | For blue color refractive index is? | More |
| 4. | The reciprocal of dispersive power is called? | Contingence |
| 5. | Interference was first observed by? | Thomas young |
| 6. | The color forms in the soap bubble is due to ? | Interference |
| 7. | In young’s double slit experiment the width of each slit is about? | 0.03mm |
| 8. | An important application of interference in thin film is? | Newton’s ring |
| 9. | The bending of waves around the edges of an obstacle is called? | Diffraction |
| 10. | The easiest pattern observed by the spectrometer is? | Fraunhofer |
| 11. | Points on successive slits separated by a distance equal to the grating element are called? | Corresponding points |
| 12. | Diffraction phenomenon can be classified by ? | Fresnel diffraction and Fraunhofer diffraction |
| 13. | The modern commercial form of grating contains about? | 6000 lines/cm |
| 14. | A wave having oscillations in all directions is called? | Un polarized |
| 15. | The angle of incidence at which the reflected beam is completely polarized is called? | Polarizing angle |
| 16. | The plane in which vibrations occur at right angles to the plane of polarization is called? | Plane of vibration |
| 17. | Intensity of polarized light can be explained by? | Maulus |
| 19. | A device which examines whether the light is plane polarized or not? | Analyzer |
| 20. | A ray of un polarized light is incident on a calcite crystal two refracted rays produced, this is called? | Double refraction |
| 21 | Ordinary rays obeys laws of? | Refraction |
| 22 | The term specific rotation is used to compare the ? | Rotation effect |
| 23 | For sodium light refractive index for ordinary light is? | 1.658 |
| 24 | Three-dimensional moving pictures are made by? | Polaroid film |
| 25 | The plane of polarization in the anticlockwise direction towards source is called? | Laevorotatory |
