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Physics 10th Class English Medium Unit 5 Online Test
| Sr. # | Questions | Answers Choice |
|---|---|---|
| 1 | An object is placed at the Centre of curvature of a concave
mirror. The image produced by the mirror is located: |
<p class="MsoNormal">Out beyond the centre of curvature<o:p></o:p></p> <p class="MsoNormal">At the centre of curvature<o:p></o:p></p> <p class="MsoNormal">Between the centre of curvature and the focal point<o:p></o:p></p> <p class="MsoNormal">At the focal point<o:p></o:p></p> |
| 2 | A converging mirror with a radius of 20cm creates a real
image 30 cm from the mirror. What is the object distance: |
<p class="MsoNormal">5.0 cm<o:p></o:p></p> <p class="MsoNormal">7.5 cm<o:p></o:p></p> <p class="MsoNormal">15 cm<o:p></o:p></p> <p class="MsoNormal">20 cm<o:p></o:p></p> |
| 3 | Which of the following quantities is not change during
refraction of light: |
<p class="MsoNormal">Its direction<o:p></o:p></p> <p class="MsoNormal">Its speed<o:p></o:p></p> <p class="MsoNormal">Its frequency<o:p></o:p></p> <p class="MsoNormal">Its wavelength<o:p></o:p></p> |
| 4 | Example of mechanical waves is: |
<p class="MsoNormal">Radio waves<o:p></o:p></p> <p class="MsoNormal">X-rays<o:p></o:p></p> <p class="MsoNormal">Light waves<o:p></o:p></p> <p class="MsoNormal">Sound waves<o:p></o:p></p> |
| 5 | The characteristics of sound by which we can distinguish
between two sounds of same loudness and pitch is called. |
<p class="MsoNormal">Intensity<o:p></o:p></p> <p class="MsoNormal">Quality<o:p></o:p></p> <p class="MsoNormal">Loudness<o:p></o:p></p> <p class="MsoNormal">Pitch<o:p></o:p></p> |
| 6 | We can distinguish between the notes of a piano and flute
due to ………… of sound. |
<p class="MsoNormal">Loudness<o:p></o:p></p> <p class="MsoNormal">Pitch<o:p></o:p></p> <p class="MsoNormal">Quality<o:p></o:p></p> <p class="MsoNormal">Intensity<o:p></o:p></p> |
| 7 | The speed of sound in a liquid is …………..than that in gases: |
<p class="MsoNormal">Ten times<o:p></o:p></p> <p class="MsoNormal">Fifteen times<o:p></o:p></p> <p class="MsoNormal">Five times<o:p></o:p></p> <p class="MsoNormal">Two times<o:p></o:p></p> |
| 8 | The sensation of sound persists in our brain for: |
<p class="MsoNormal">0.1 sec<o:p></o:p></p> <p class="MsoNormal">0.01 sec<o:p></o:p></p> <p class="MsoNormal">1 sec<o:p></o:p></p> <p class="MsoNormal">10 sec<o:p></o:p></p> |
| 9 | The equivalent resistance of a parallel combination is | equal to sum of all resistance is greater than the largest resistance of combination is smaller than the smallest resistance of combination All of these |
| 10 | When resistance are connected in series the current passing through them is . | Different Zero The same None of these |
| 11 | The property of substance, which opposes the flow of current through it is called. | Resistance Reactance Resistivity None of these |
| 12 | As the temperature of a conductor rises, its resistance. | Increase Decrease Does not change None of these |
