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Physics ICS Part 1 Chapter 7 Online Test
| Sr. # | Questions | Answers Choice |
|---|---|---|
| 1 | Diffraction effect is. |
<p>More for a round edge</p> <p>Less for a round edge</p> <p>More for a sharp edge</p> <p>Less for a blunt edge</p> |
| 2 | Two light waves which ar enot coherent cannot be |
<p>Interference</p> <p>Diffracted</p> <p>Polarized in the same plane</p> <p>Superposed</p> |
| 3 | If amplitude of wave is doubled the energy becomes. |
<p>Four times</p> <p>Half</p> <p>Twice</p> <p>Six times</p> |
| 4 | Ratio of the fundamental frequency of an open end and closed end organ pipe of same length is. |
<p>2 : 1</p> <p>1 : 2</p> <p>1 : 1</p> <p>4 :1</p> |
| 5 | If a stretched string is 4 m and it has 4 loops of stationary waves, then wavelength is. |
<p>1 m</p> <p>2 m</p> <p>3 m</p> <p>4 m</p> |
| 6 | A stationary wave is established in a string which vibrates infour segments at a frequency of 120 Hz. Its fundamental frequency is. |
<p>30 Hz</p> <p>15 Hz</p> <p>60 Hz</p> <p>480 Hz</p> |
| 7 | In number of nodes in open end organs pipes are 'N' THEN THE NUMBER OF ANTINODES ARE. |
<p>N</p> <p>N+1</p> <p>N - 1</p> <p>N - 2</p> |
| 8 | A set of freqeuncies which are multiples of the fundamental frequency are called. |
<p>Doppler effect</p> <p>Nodal frequencies</p> <p>Harmonics</p> <p>Beat frequencies</p> |
| 9 | Energy is not carried by |
<p>Transverse wave</p> <p>Loongitudinal wave</p> <p>Stationary wave</p> <p>Progressive wave</p> |
| 10 | The point of maximum displaceemnt on stationary wave is |
<p>Antinode</p> <p>Node</p> <p>Trough</p> <p>Crest</p> |
| 11 | The number of nodes hetween two consectutive antinodes are. |
<p>Two</p> <p>Three</p> <p>One</p> <p>Four</p> |
| 12 | At the closed end of an air column there exist |
<p>Node</p> <p>Anti node</p> <p>Crest</p> <p>Trough</p> |
| 13 | Open end of an organpipe act as. |
<p>Node</p> <p>Anti Node</p> <p>Crest</p> <p>Trough</p> |
| 14 | Waves produced over sgtrings are. |
<p>Stationary waves</p> <p>Mechanical Waves</p> <p>Standing waves</p> <p>Both a and c</p> |
| 15 | A one meter long string establishes two loops waves length of the wave is. |
<p>1 m</p> <p>0.5 m</p> <p>0.25 m</p> <p>2 m</p> |
| 16 | The portion of wave below the mean position is called. |
<p>Crest</p> <p>Trough</p> <p>Frequncy</p> <p>Wave Length</p> |
| 17 | The distance between two consecutive throughs is. |
<p>Frequency</p> <p>Wave front</p> <p>Wave Length</p> <p>Speed</p> |
