PHY101

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

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

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

D. The fundamental interval of a thermometric scale is ______

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

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

G. 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?

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

I. 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

J. 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?

K.  Tin melts at 232 under standard atmospheric pressure. Express this temperature in kelvin

L. 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 _____________

M. The _________ is an aggregate of point masses such as that the relative separation between any two points remains invariant

N. When trying to turn a key into a lock, ____ of forces are applied.

O. Forces are called coplanar when all of them acting on body lie in one _____.

P.  Which of the following contributes to the instability of an object?

Q. 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.

R.  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 ------------

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

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

U.  Which of these is correct about viscosity?

V. Instantaneous velocity is the velocity of a particle at some _____of its path.

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

X.  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 ______

Y. 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 $g = 10ms^{-2}$

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

AA. 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?

AB. 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.

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

AD.  The amount of heat stored in a substance depends on all of the following EXCEPT _______

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

AF. The physical pendulum is any real pendulum in which all the mass is taken to be concentrated at a_____.

AG. Which of the following physical concepts best explains why passengers in fast moving cars should always fasten their seat-belts?

AH.  The trajectory of a projectile is ________

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

AJ. What is the unit of impulse?

AK. Applied force is proportional to extension produced is a statement of ____ law.

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

AM. Thermal expansion of a solid material depends on the following EXCEPT __________

AN.  An ungraduated mercury thermometer attached to a millimeter scale reads 22.8mm in ice and 242mm in steam at standard pressure. What will the millimeter read when the temperature is 20^{o} C?

AO. One of these is an example of thermal radiation detector

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

AQ. The main condition for the rigid body is that the distance between various particles of the body does not ____.

AR.  Which of the following is NOT true?

AS. The frictional force in fluids is known as ___________

AT. A piece of stone has mass 80kg and density of 0.10 kg per meter cube. What is its volume in meter cube?

AU. Calculate the root-mean-square velocity of oxygen molecules at room temperature, 25 oC. Given that molar mass of oxygen and molar gas constant are 31.9998 g/mol and 8.3143 J/mol K, respectively in meter per second.

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

AW. According to principle of moment, if a system of coplanar forces is in equilibrium, then the algebraic ____of their moments about any point in their plane is zero

AX. _______ is that which enables a body to perform work.

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

AZ. When a gas is allowed to expand at constant _____the process is described as isothermal.

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

BB.  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?

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

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

BE. 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}) $

BF. An object is shot from the ground at 75m/s at an angle of 45 degrees above the horizontal. How high does the object get before beginning its descent?

BG. Gases occupy volume of the __________.

BH. 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 $vec{a}cdot(vec{b}timesvec{c})$

BI.  Which of the following statements is not correct about reference frames?

BJ. The mechanism of heat transfer from one point to another through vibration of the molecules of the medium is called -------------

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

BL.  The molecules of a liquid are held together by what type of forces?

BM. The general motion of a rigid body is a combination of ________and rotation.

BN.  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

BO. A Null vector is a vector whose magnitude is __________.

BP. 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 ___________.

BQ.  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 $vec{B}$

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