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Question 1 of 10
1. Question
A 240V A.C supply is supplied to operate an electric kettle that has a resistance of 30.
Calculate the maximum instantaneous current passing through the electric kettleCorrectIncorrect -
Question 2 of 10
2. Question
A copper cable can withstand a tensile stress of 7×109 Nm-2. If such cable is used to support a mass of 800g, what minimum diameter can the cable have?
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Question 3 of 10
3. Question
The reason your hand will not penetrate into a solid wall is that your hand and the wall are covered on the surface which repels each other
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Question 4 of 10
4. Question
Which of the following physical quantities is NOT a fundamental quantity?
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Question 5 of 10
5. Question
If the position of a particle is given by x = 3 – 2t + 3t2 meters. Find the velocity at t = 3 seconds
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Question 6 of 10
6. Question
A tuning fork of frequency 360Hz is sounded together with one of 364Hz. How many beats are heard?
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Question 7 of 10
7. Question
Which of the following devices is not an application of the p-n junction diode?
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Question 8 of 10
8. Question
An object forms an image three times its own size when placed 10.72cm from the pole of a spherical mirror.
What is the focal length if the image is real?CorrectIncorrect -
Question 9 of 10
9. Question
The negative sign in Faraday’s law of induction is an expression of
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Question 10 of 10
10. Question
Which of the following is correct?
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