ATTENTION:
Kindly note that you will be presented with 50 questions randomized from the NOUN question bank. Make sure to take the quiz multiple times so you can get familiar with the questions and answers, as new questions are randomized in each attempt.
Good luck!
PHY101
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1. Which of the following is NOT true?
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2. A rope suspended from a ceiling supports an object of weight W at its opposite end. Another rope tied to the first at the middle is pulled horizontally with a force of 30N. The junction P of the ropes is in equilibrium. Calculate the weight W and the tension T in the upper part of the first rope
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3. What is the unit of impulse?
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4. What are the dimensions of power (time rate of change of expending energy)
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5. Given three vectors $vec{a} = {-}vec{i}{-}4vec{j}+2vec{k}$, $vec{b} = 3vec{i}+2vec{j}-2vec{k}$, $vec{c} = 2vec{i}{-}3vec{j}+vec{k}$, calculate $vec{a}cdot(vec{b}timesvec{c})$
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6. The specific latent heat of vapourization of a liquid is the quantity of heat in joules required to change 1kg mass of the liquid at its _______to gas at the same temperature.
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7. The main condition for the rigid body is that the distance between various particles of the body does not ____.
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8. A perfectly ____ body is defined as one which emits every wavelength with the maximum energy for each wavelength for the particular temperature of the body.
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9. A 50kg boy suspends himself from a point on a rope tied horizontally between two vertical poles. The two segments of the rope are then inclined at angles 30 degrees and 60 degrees respectively to the horizontal.The tensions in the segments of the rope in newtons are ______
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10. A piece of stone has mass 80kg and density of 0.10 kg per meter cube. What is its volume in meter cube?
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11. If a force of 40N acting in the direction due East and a force of 30N is acting in the direction due North. Then the magnitude of the resultant forces will be ___________.
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12. The ____ of the instantaneous centre of a moving rigid body is called centroid.
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13. According to the kinetic-molecular theory, particles of matter are in motion in both gas and _____.
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14. The absolute zero temperature refers to the temperature at which _____
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15. The coefficient of limiting static friction is the ratio of the ____ to the normal force.
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16. An electric kettle contains 1.5 kg of water at $$100 ^{o}$$ and powered by a 2.0 kW electric element. If the thermostat of the kettle fails to operate, approximately how long will it take for the kettle boil dry? (Take the specific latent heat of vaporization of water as $2000kJkg^{-1}) $
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17. FBQ25: A ________ is the turning effect caused by a couple.
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18. Which of the following statements is not correct about reference frames?
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19. In which of the following phenomena is surface tension important?
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20. A cart is moving horizontally along a straight line with constant speed of 30 m/s. A projectile is fired from the moving cart in such a way that it will return to the cart after the cart has moved 80 m. At what speed (relative to the cart) and at what angle (to the horizontal) must the projectile be fired?
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21. Which of the following substances has the highest viscosity at room temperature?
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22. One of these is an example of thermal radiation detector
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23. The trajectory of a projectile is ________
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24. The rise in the level of a liquid in a tube is h. If half the amount is poured outside, what will be the new rise in the liquid level?
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25. The _________ is an aggregate of point masses such as that the relative separation between any two points remains invariant
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26. Forces are called coplanar when all of them acting on body lie in one _____.
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27. The molecules of a liquid are held together by what type of forces?
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28. A man leaves the garrage in his house and drives to a neighbouring town which is twenty kilometres away from his house on sight-seeing. He returns home to his garrage two hours after. What is his average velocity from home in km/h?
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29. A body hangs from a spring balance supported from the roof of an elavator. If the elavator has an upward acceleration of $3ms^{-2}$ and the balance reads 50 N, what is the true weight of the body?
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30. The term that best describes the need to hold the butt of a riffle firmly against the shoulder when firing to minimise impact on the shoulder is ________
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31. The statement "the specific latent heat of fusion of ice is $3.3times 10^{5}$J/kg" means ______
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32. Which of these is correct about viscosity?
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33. The resultant of vectors $vec{A}$ and $vec{B}$ has a magnitude of 20 units.$vec{A}$ has a magnitude of 8 units, and the angle between $vec{A}$ and $vec{B}$ is $40^{o}$. Calculate the magnitude of $vec{B}$
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34. 3-vectors are only properly represented in a 3-dimensional _____.
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35. When an object is in thermal equilibrium, it is losing and gaining heat at ____ rates.
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36. A Null vector is a vector whose magnitude is __________.
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37. One of these is NOT a basic assumption of kinetic theory of ideal gases
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38. Radius of _________ is the radial distance from any given axis at which the mass of a body is concentrated without changing the moment of inertia of the body about that axis.
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39. The frictional force in fluids is known as ___________
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40. Given that the specific capacity of ice is one-half that of water, does is take more thermal energy to raise the temperature of 5 g of water or 5 g of ice by $$6^{o}C?$$
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41. A wall or partition that allows free exchange of heat energy between two systems is referred to as --------------
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42. A string of natural length L extends to a new length L' under tensile force F. If Hooke’S law applies, the work done in stretching the spring is ------------
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43. __________forces meet at one point and have their lines of action in different planes.
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44. The physical pendulum is any real pendulum in which all the mass is taken to be concentrated at a_____.
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45. Two forces act on a point object as follows: 100 N at $170^{o}$ and 100N at $50^{o}$. Find the resultant force
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46. When the junctions of two dissimilar metals are maintained at different temperatures an electromotive force is is set up in the circuit of which these junctions are a part. A pair of junctions of this kind is known as _____________
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47. The fundamental interval of a thermometric scale is ______
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48. The heat required to raise the temperature of the body through 1K is called _______.
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49. A passenger in a moving car and a passerby standing at the road side see each other as moving in the opposite direction. Which of the following is NOT true?
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50. What is common to the variation in the range and the height of a projectile?
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