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### 11th Class Physics Chapter 9 Test

Here you can prepare 11th Class Physics Chapter 9 Physical Optics Test. Click the button for 100% free full practice test.

## First Year Physics Chapter 9 Online MCQ Test for 1st Year Physics Chapter 9 (Physical Optics)

This online test contains MCQs about following topics:

- Wave Fronts - Huygen's principle - Interferance of Light Waves - Young's Double slit Experiment - Interference in Thin Films - Newton's Rings - Michelson's Interferometer - Diffraction of Light - Diffraction due to a Narrow slit - Diffraction Grating - Diffraction of X-Rays by Crystals - Polarization

ICS Part 1 Physics Ch 9 Test

### First Year Physics Chapter 9 Online MCQ Test for 1st Year Physics Chapter 9 (Physical Optics)

1 The distinguish between transverse and longitudinal wave_______ is used.
• A. Refraction
• B. Interference
• C. Diffraction
• D. polarization
2 Dark fringes are also called as
• A. Minima
• B. Maxima
• C. Wave front
• D. Ray of light
3 The wavelength of X-rays is of the order of.
• A. 10<sup>-8</sup> m
• B. 10<sup>-10</sup>m
• C. 10<sup>-5</sup>m
• D. 10<sup>-4</sup>m
4 Fringe spacing is inversely proportional to.
• A. Wave length
• B. Slit separation
• C. Distance between the slit and screen
• D. Frequency of light
5 Oil film floating on water exhibits colours due to
• A. Interference
• B. Diffraction
• C. Polarization
• D. All of these
6 In case of point source the shape of wave front is.
• A. Plane
• B. spherical
• C. Circular
• D. Eliptical
7 According to Hygen's principle, each point on a wave front acts as a source of.
• A. Secondary wavelet
• B. New wave front
• C. Sound
• D. Primary wavelet
8 Light waves emitted from a source spread in
• A. Specific direction
• B. All direction
• C. Upward direction
• D. None of these
9 Bending of light around the edges of an obstacle is called.
• A. Refraction
• B. Polarization
• C. Interference
• D. Diffraction
10 The distance between two consecutive wave front is equal to
• A. One wave length
• B. Two wave length
• C. Half wave length
• D. Three wave length

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