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Q1— Section header —
1.1Choose the correct term from those in brackets and write it next to the question number (1.1 .1 1.
1.5\n the ANSWER BOOK.
1.1.1(Pure tone/Pitch\s free of overtones.
1.1.2The (power/work done\smitted per unit area is perpendicular to the direction of propagation.
1.1.3(Potential/Kinetic energy is the ability of a body to do work due to its motion.
1.1.4The ( oppler/frequency effect occurs as soon as a source moves while it transmits sound because
1.1.5
1.2Complete the following paragraph by choosing a word or words from the list below. Write only the answer next to the question number (1.2.1
1.2.6\in the ANSWER BOOK. closed tube; vibrations; stationary waves; amplitude; resonate; directions in a/an (1.2.2 if the wavelength is four times the length of the tube.
1.3The horn of an electric train is sounded at a frequency of 2 800 Hz. The speed of sound in air is 330 m/s.
1.3.1he frequency heard by a student standing on the platform of the train station while the train approaches him at a speed of
1.3.2The frequency heard by the student when the train is just passing him
1.3.3
1.4A steam power plant must generate 540 MW to fulfil the needs of a city
1.5Kundt dust tube with rod 0,75 m long and clamped at its midpoint, is set into longitudinal oscillation. The distance between the dust heaps in the tube is
1.5.1The velocity of sound in the rod
1.5.227
Q2— Section header —
2.1Complete the following sentences by writing only the missing word or words next to the question number (2.1.1
2.1.5
2.2A gas with a volume of 1,42 10 is at a pressure of 222 kPa and a
2.2.1The mass of the this gas
2.2.2The volume of the gas at the new P
2.2.3The change in entropy of the gas
2.2.4
2.3Define the specific heat capacity of a gas or substance (2\ 15070126
2.4
2.5
2.6
Q3— Section header —
3.1hat is the dielectric constant of a capacitor (2\
3.2Define the unit of electrical charge (2\
3.3
3.3.1The potential difference across the combination
3.3.2
3.4Determine the capacitance of parallel plate capacitor in microfarads if it is
3.5
3.6Complete the following sentences by choosing a word or words from the list below. Write only the answer next to the question number ( 6.
3.6.6\in the ANSWER BOOK. current; dielectric; one second; ratio; electrical charge; relative permittivity A co through the cross sec
Q4— Section header —
4.1Give THREE characteristics of an electron. (3\
4.2
4.3
4.4In a battery with four cells, each cell has an emf of 2,5 . It is tested at a rate
4.4.1The amount of power needed to charge the battery (3\
4.4.2The amount of energy that is stored in the battery if it is charged for two hours (2\
4.5Give TWO characteristics of a radioactive substance. (2\
4.6
4.6.1The current in the electron beam (3\
4.6.2The potential difference through which the electrons have been accelerated (2\ 15070126
4.7Engineering physics students are testing different lights that shine onto a particular metal. The use the following information to calculate different energies. A red light with
4.7.1The energy of a photon of this red light (3\
4.7.2The maximum kinetic energy of each ejected electron (2\ [25] TOTAL: 100 1507012625