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## Matric Part 2/10th Class Physics Chapter 12 MCQ Test With Answer for Unit 12 Spherical Mirrors and Lenses

This online test contains MCQs about following topics:

- Simple Harmonic Motion (SHM) - Damped Oscillations
- Wave Motion
- Types of Mechanical Waves
- Ripple Tank

#### 10th Physics Chapter 3 Test

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### Matric Part 2/10th Class Physics Chapter 12 MCQ Test With Answer for Unit 12 Spherical Mirrors and Lenses

1 In totally reflecting prism one angle is of 90<sup>o</sup>, and other two angles are of:
• A. 30<sup>o</sup>,30<sup>o</sup>
• B. 45<sup>o</sup>,90<sup>o</sup>
• C. 45<sup>o</sup>,45<sup>o</sup>
• D. 40<sup>o</sup>,40<sup>o</sup>
2 Snell' law is:
• A. n = sin&lt;x/sin &lt;r
• B. n=sin &lt;i/sin&lt;r
• C. n = sin &lt;r/sin&lt;i
• D. &lt;i/&lt;r
3 To see from submarine the ship at the surface of water , we use:
• A. Telescope
• B. Microscope
• C. Peri scope
• D. Prism
4 Critical angle for diamond is:
• A. 60<sup>o</sup>
• B. 24<sup>o</sup>
• C. 26<sup>o</sup>
• D. 49<sup>o</sup>
5 <p class="MsoNormal">Astronauts in space need to communicate with each other by radio links because:<o:p></o:p></p>
• A. <p class="MsoNormal">Sound waves travel very slowly in space<o:p></o:p></p>
• B. <p class="MsoNormal">Sound waves travel very fast in space<o:p></o:p></p>
• C. <p class="MsoNormal">Sound waves cannot travel in space<o:p></o:p></p>
• D. <p class="MsoNormal">Sound waves have low frequency in space<o:p></o:p></p>
6 <p class="MsoNormal">The loudness of a sound is most closely related to its:<o:p></o:p></p>
• A. <p class="MsoNormal">Frequency<o:p></o:p></p>
• B. <p class="MsoNormal">Period<o:p></o:p></p>
• C. <p class="MsoNormal">Wavelength<o:p></o:p></p>
• D. <p class="MsoNormal">Amplitude<o:p></o:p></p>
7 <p class="MsoNormal">CD which is made of soft material is called:<o:p></o:p></p>
• A. <p class="MsoNormal">Hard disk<o:p></o:p></p>
• B. <p class="MsoNormal">Floppy disk<o:p></o:p></p>
• C. <p class="MsoNormal">Iron disk<o:p></o:p></p>
• D. <p class="MsoNormal">Copper disk<o:p></o:p></p>
8 The ray of light striking to the side of prism is called:
• A. refraction ray
• B. incident ray
• C. reflected ray
• D. emergent ray
9 <p class="MsoNormal">How does sound travel from its source to your ear:<o:p></o:p></p>
• A. <p class="MsoNormal">By changes in air pressure<o:p></o:p></p>
• B. <p class="MsoNormal">By vibration in wires or strings<o:p></o:p></p>
• C. <p class="MsoNormal">By electromagnetic waves<o:p></o:p></p>
• D. <p class="MsoNormal">By infrared waves<o:p></o:p></p>
10 The distance of spherical mirror is called:
• A. Curvature
• B. Aperture
• C. Sphere
• D. a,b

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