PHY101




Category: PHY101

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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.  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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3. When an object is in thermal equilibrium, it is losing and gaining heat at ____ rates.

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4. The method of mixtures as a means of measuring the amount of heat of a substance depends of the principle of conservation of ______

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5.  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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6. The _______ occurs when the driving frequency is the same as the natural frequency of the oscillator.

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7.  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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8. A wire of cross-sectional area of $6times10{-5}m^{2}$ and length 50cm stretches by 0.2mm under a load of 3000N. Calculate the Young’s modulus for the wire

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9. One of these is NOT a basic assumption of kinetic theory of ideal gases

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10.  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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11. The heat required to raise the temperature of the body through 1K is called _______.

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12. The ____ of the instantaneous centre of a moving rigid body is called centroid.

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13. On what thermometric property does the working of a thermistor depend?

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14. Which of the following is NOT a thermometric property?

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15. The statement "the specific latent heat of fusion of ice is $3.3times 10^{5}$J/kg" means ______

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16. The velocity of a particle moving with simple harmonic motion is ____ at the mean position.

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17.  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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18. Which of the following substances has the highest viscosity at room temperature?

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19. 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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20. How fast must a ball be rolled along the surface of a 70-cm high table so that when it rolls off the edge it will strike the floor at the same distance (70cm) from the point directly below the edge of the table?

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21.  A ball is kicked and flies from point P to Q following a parabolic path in which the highest point reached is T. The acceleration of the ball is _______

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22. A mass accelerates uniformly when the resultant force acting on it

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23.  The speed of 90 hm/hr is equal to ------------------ m/s

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24. What is the unit of impulse?

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25.  In which of the following phenomena is surface tension important?

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26. What is common to the variation in the range and the height of a projectile?

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27. 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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28. Which of the following does NOT refer to the terms description of stability of on an object?

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29. 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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30. _______ is that which enables a body to perform work.

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31.  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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32. 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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33. An object is thrown upward from the edge of a tall building with a velocity of 10 m/s. Where will the object be 3 s after it is thrown? Take $g = 10ms^{-2}$

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34. __________forces meet at one point and have their lines of action in different planes.

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35. 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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36.  The trajectory of a projectile is ________

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37. The fundamental interval of a thermometric scale is ______

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38. According to the kinetic-molecular theory, particles of matter are in motion in both gas and _____.

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39. 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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40. A wall or partition that allows free exchange of heat energy between two systems is referred to as --------------

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41. FBQ25: A ________ is the turning effect caused by a couple.

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42. 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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43.  The absolute zero temperature refers to the temperature at which _____

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44. The coefficient of limiting static friction is the ratio of the ____ to the normal force.

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45. Gases occupy volume of the __________.

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46.  The motion of a ball rolling down a ramp is one with ________

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47. 3-vectors are only properly represented in a 3-dimensional _____.

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48.  A stone thrown from ground level returns to the same level 4 s after. With what speed was the stone thrown? Take $g = 10ms^{-2}$

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49.  What are the dimensions of power (time rate of change of expending energy)

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50.  Which of the following is NOT an effect of heat on a substance?

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