Which of the following features of an electrostatic line of force is not correct?
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2003
Which of the following instruments gives a pure note when sounded?
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2003
A sonometer wire of linear density 0.08kg m-1 subjected to a tension of 800N is plucked. Calculate the speed of a pulse which moves from one end of the wire to the other
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2003
The speed of sound in air is is directly proportional to
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2003
Which of the following statements about the human eye and the camera is correct?
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2003
A current of 10A passes through a conductor for 10s, calculate the charge flowing through the conductor
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2003
Two identical cells each of e.m.f 2v and internal resistance 1.0\(\Omega\) are connected in parallel. The combination is connected to an external load of 1.5\(\Omega\). Calculate the current in the circuit
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2003
Which of the following statement about force is correct ?
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2003
Which of the following statements about an electromagnet is correct?
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2003
The direction of induced current in a straight wire placed in magnetic field is determined by using
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2003
One difference between a reactance and a resistance in an alternating current circuit is
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2003
The maximum power dissipated by a 100\(\Omega\) resistor in a circuit is 4W. Calculate the voltage across the resistor
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2003
The minimum energy required to remove an electron from an atom is known as
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2003
Which of the following statements is true of ultra violet radiations? It
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2003
Which of the following statements is not true of the isotopes of an element? They
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2003
Which of the following reactions represents nuclear fusion?
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2003
The bar magnet illustrated in the diagram above picks up an unmagnetised steel nail X. In turn, X picks up a similar nail Y and so on. The nail are said to be magnetised by
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2003
The silvered surface in a vacuum flask reduces heat loos due to
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2003
An electric lamp rated 120W is used on a 240Vrms, calculate the resistance of its filament
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2003
A radioactive element has a decay constant of 0.077s-1. Calculate its half-life