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Question 1 of 10
1. Question
A household refrigerator is rated 200 watts. If electricity cost 5k per kWh, what is the cost of operating it for 20days?
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Question 2 of 10
2. Question
The principle of operation of an induction coils is based on
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Question 3 of 10
3. Question
A block and tackle system is used to lift a load of 20N through a vertical height of 10m. If the efficiency of the system is 40%, how ,much work is done against friction
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Question 4 of 10
4. Question
The pressure on the gas of constant gas thermometer at the ice point is 325mm of mercury and at the steam point 875mm of mercury. Find the temperature when the pressure of the gas is 190mm mercury.
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Question 5 of 10
5. Question
Which of the following is a fundamental unit?
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Question 6 of 10
6. Question
A car moving with a speed of 90km/hr was brought uniformly to rest by the application of the brakes in 10s. How far did the car travel after the brakes were applied?
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Question 7 of 10
7. Question
A body of mass 100g moving a velocity of 10.0ms-1 collides with a wall. If after the collision, it moves with a velocity of 2.0ms-1 in the opposite direction, calculate the change in momentum.
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Question 8 of 10
8. Question
A trough 12.0 cm deep is filled with water of refractive index 4/3. By how much would a coin at the bottom of the trough appear to be displaced when viewed vertically from above the water surface?
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Question 9 of 10
9. Question
A wire of length 15m made of a material of resistivity 1.8 x 10-6 –m has a resistance of 0.27, determine the area of the wire
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Question 10 of 10
10. Question
After three half-lives, the fraction of a radioactive material that has decayed is
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