| 1 |
<p class="MsoNormal">A device which has two ways communication is:<o:p></o:p></p> |
- A. <p class="MsoNormal">Television<o:p></o:p></p>
- B. <p class="MsoNormal">Radio<o:p></o:p></p>
- C. <p class="MsoNormal">Hard disk<o:p></o:p></p>
- D. <p class="MsoNormal">Mobile phone<o:p></o:p></p>
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| 2 |
To see stomach problems we use: |
- A. Gastroscope
- B. Bronchoscope
- C. Cystoscope
- D. All of these
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| 3 |
An object of placed at he centre of curvature of a concave mirror. The image produced by the mirror is located: |
- A. out beyond the centre of curvature.
- B. at the centre of curvature
- C. between the centre of curvature and the focal point
- D. at the focal point
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| 4 |
An object is placed 6 cm away in front of a concave mirror that has 10 cm focal length. Determine the location of the image: |
- A. -5 cm
- B. -10 cm
- C. -15 cm
- D. -20 cm
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| 5 |
Sun light consist of ____________ colour |
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| 6 |
Which types of image is produced by the converging lens of human eye if it view a distant object? |
- A. Real , erect, same size
- B. Real, inverted, diminshed
- C. Virtual, erect,diminshed
- D. Virtual, inverted, magnified
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| 7 |
When light passes through a prism it deviates from its original path due to: |
- A. Reflection
- B. Diffraction
- C. Interference
- D. Refraction
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| 8 |
____________ is always virtual in case of convex mirror. |
- A. p
- B. image
- C. object
- D. all of these
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| 9 |
A converging mirror with a radius of 20 cm creates a real image 30 cm from the mirror. What is the object distance? |
- A. 5.0 cm
- B. 7.5 cm
- C. 15 cm
- D. 20 cm
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| 10 |
Half of radius of curvature is called: |
- A. Focal length
- B. Principal focus
- C. Axis
- D. None of these
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