Which radiation is emitted when a beam of fast moving cathode rays is stopped by a heavy element?
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2002
The use of electrical fuses in domestic wiring is
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2002
What does NOT affect the rate of evaporation of a liquid
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2002
If the refractive index of water is 1.33, what is the critical angle for a water-air boundary?
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2002
An object weighing 0.60N is hung on a spiral spring and caused it to extend by 6.0cm. The object is removed and a black of wood replacing it causes the spring to extend by 10.0cm. What is the weight of the block of wood?
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2002
When a current of 1 .0A flows in an electrolyte for 3.0h, a mass of 1 .0g is deposited. What mass will be deposited in 10.0h if a current of 3.0A flows through the electrolyte?
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2002
Which process will increase the rate of oscillation of a pendulum?
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2002
Lenz’s law of electromagnetic induction states that
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2002
What is stored by a dry Leclanhé cell?
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2002
According to the Kinetic Theory, what does NOT occur when the temperature of a constant volume of gas is increased?
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2002
A body of mass M1 moving with a velocity U collides with a stationary body of mass M2 and both move with a common velocity V. If linear momentum is conserved, which expression correctly represents V?
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2002
The silvered walls of a vacuum flask minimise loss of heat due to
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2002
A platinum-resistance thermometer has a resistance of 10 ω at 0°C and 18 ω at 100°C. Assuming that resistance changes uniformly with temperature, what is the resistance of the thermometer when the temperature is 45°C?
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2002
It is NOT possible to determine exactly and simultaneously the position and momentum of a particle. This statement is known as the
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2002
An a.c. generator can be converted into a d.c. generator by replacing
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2002
A transformer supplies 12V when connected to a 240V mains. If the transformer takes 0.120A from the mains when used to light a 12V, 24W lamp, what is its efficiency?
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2002
The phenomenon of photoelectric effect is NOT used in