Until a force acts on a body, it's velocity is
A. zero
B. constant
C. increasing
D. decreasing
Description : If there is no net force acting on body, then its acceleration is A. zero B. constant C. increasing D. decreasing
Last Answer : zero
Description : If the resultant force acting on a body of constant mass is zero, the body's acceleration is: w) increasing x) decreasing y) always zero z) negative.
Last Answer : ANSWER: Y -- ALWAYS ZERO
Description : If the resultant force acting on a body of constant mass is zero, the body's momentum is: w) increasing x) decreasing y) always zero z) constant
Last Answer : ANSWER: Z -- CONSTANT
Description : An object travelling with constant velocity has A. constant momentum B. zero momentum C. increasing momentum D. decreasing momentum
Last Answer : constant momentum
Description : If the slope of a graph is zero and so the displacement, then velocity is A. increasing B. decreasing C. constant D. zero
Description : Object is in equilibrium if resultant force acting on it is A. increasing B. decreasing C. zero D. becomes constant
Description : A ball tied with a string to a rotating shaft revolves at uniform speed. As the shaft is suddenly brought to rest, the string starts getting round the shaft with the angular velocity of the ball (a) increasing (b) decreasing (c) remaining constant (d) becoming zero
Last Answer : Ans:(a)
Description : An object covers distance which is directly proportional to the square of the time. Its acceleration is – (1) increasing (2) decreasing (3) zero (4) constant
Last Answer : (4) constant Explanation: When an object covers distance which is directly proportional to the square of the time, its acceleration is constant. This is seen in the cases of falling objects. This connection between time and distance was first observed by Galileo.
Description : If we get a straight line with positive slope then its acceleration is A. increasing B. decreasing C. zero D. constant
Last Answer : constant
Description : An object covers distance which is directly proportional to the square of the time. Its accelaration is (1) increasing (2) decreasing (3) zero (4) constant
Description : Entropy of the universe is - (1) continuously increasing (2) continuously decreasing (3) zero (4) constant
Last Answer : (1) continuously increasing Explanation: In an irreversible process, entropy always increases, so the change in entropy is positive. The total entropy of the universe is continually increasing.
Description : Total momentum within a closed system is A. increasing B. decreasing C. zero D. constant
Description : If a body moves with a constant speed in a circle – (1) no work is done on it (2) no force acts on it (3) no acceleration is produced in it (4) its velocity remains constant
Last Answer : (4) its velocity remains constant Explanation: A body moving with a constant speed in a circle is an example of uniform circular motion. The velocity vector is constant in magnitude but ... magnitude or the direction constitutes a change in the velocity which leads to change in acceleration.
Description : If a body moves with a constant speed in a circle (1) no work is done on it (2) no force acts on it (3) no acceleration is produced in it (4) its velocity remains constant
Last Answer : its velocity remains constant
Description : During inter conversion of energy from one form to other forms, total energy at any time remains– (1) constant (2) zero (3) increasing (4) decreasing
Last Answer : (1) constant Explanation: During interconversion of energy from one form to other forms, total energy at any time remains constant.
Description : By increasing the current, the drift velocity A. decreases B. increases C. remains constant D. becomes zero
Last Answer : remains constant
Description : At a point in a simply supported or overhanging beam where Shear force changes sign and = 0, Bending moment is (a) Maximum (b) Zero (c) Either increasing or decreasing (d) Infinity
Last Answer : (a) Maximum
Description : A satellite is observed to move in a circle about the earth at a constant speed. This means that the force acting upon it is: w) zero x) parallel to the direction of the satellite ... velocity y) perpendicular to the direction of the satellite's instantaneous velocity z) none of the above
Last Answer : ANSWER: Y -- PERPENDICULAR TO THE INSTANTANEOUS DIRECTION OF THE SATTELITE’S VELOCITY
Description : A body which is attached to a spring undergoes simple harmonic motion. The magnitude of the body's acceleration is: w) constant x) proportional to its displacement from its equilibrium position y) zero z) always increasing.
Last Answer : ANSWER: X -- PROPORTIONAL TO ITS DISPLACEMENT FROM ITS EQUILIBRIUM POSITION
Description : A constant potential difference is applied across the plates of a parallel-plate capacitor. Neglecting any edge effects, the electric field inside the capacitor is: w) constant x) varying as one over r squared y) decreasing as one moves from the positive to the negative plate z) zero
Last Answer : ANSWER: W -- CONSTANT
Description : If air resistance is neglected, at the mid-point of its swing, the acceleration of the bob of a simple pendulum along its path is always a.Increasing b.Zero c.A cycloid d.Decreasing e.A minimum but not equal to zero
Last Answer : d. Decreasing
Description : Which of the following statements are TRUE for damped vibrations? (P) . For a system having critical damping, the value of the damping ratio is unity and system does not undergo a vibratory motion. (Q) . Logarithmic decrement method ... Q only (B) P and S only (C) P, Q and R only (D) Q and S only
Last Answer : (C) P, Q and R only
Description : When marginal utility is zero, the total utility is - (1) Minimum (2) Increasing (3) Maximum (4) Decreasing
Last Answer : (3) Maximum Explanation: Marginal utility measures the extra utility (or satisfaction) from consuming an additional unit of a product. Total utility is the total satisfaction from the consumption of the ... in total satisfaction from the consumption of that unit. So the total unit is at maximum.
Description : When marginal utility is zero, the total utility is (1) Minimum (2) Increasing (3) Maximum (4) Decreasing
Last Answer : Maximum
Description : If distance is increasing uniformly with time, then velocity is A. increasing B. decreasing C. constant D. zero
Description : Enzymes increases the rate of reactions by (A) Increasing the free energy of activation (B) Decreasing the energy of activation (C) Changing the equilibrium constant of the reaction (D) Increasing the free energy change of the reaction
Last Answer : Answer : B
Description : Enzymes increase the rates of reactions by (A) Increasing the free energy of activation (B) Decreasing the energy of activation (C) Changing the equilibrium constant of the reaction (D) Increasing the free energy change of the reaction
Description : Enzymes accelerate the rate of reactions by (A) Increasing the equilibrium constant of reactions (B) Increasing the energy of activation (C) Decreasing the energy of activation (D) Decreasing the free energy change of the reaction
Last Answer : Answer : C
Description : Keeping other parameters constant brake power of diesel engine can be increased by (a) Decreasing the density of intake air (b) Increasing the temperature of intake air (c) Increasing the pressure of intake air (d) Decreasing the pressure of intake air
Last Answer : Ans : c
Description : During size reduction by a jaw crusher, the energy consumed decreases with the (A) Decreasing size of product at constant size of feed (B) Decreasing machine capacity (C) Increasing size of feed at constant reduction ratio (D) None of these
Last Answer : (C) Increasing size of feed at constant reduction ratio
Description : Measured quality of a manufactured product is : 1. Always constant 2. Continually decreasing 3. Subject to a certain amount of variation 4. Continually increasing
Last Answer : 3. Subject to a certain amount of variation
Description : Walter’s Model suggests that a firm can always increase the value of the share by: A. Increasing dividend B. Decreasing dividend C. Constant Dividend D. None of the
Last Answer : D. None of the
Description : Over the years the contribution of agriculture to Indian GDP is a. Increasing b. Decreasing c. Constant d. None of these
Last Answer : b. Decreasing
Description : Unsteady uniform flow is represented by flow through a/an (A) Long pipe at constant rate (B) Long pipe at decreasing rate (C) Expanding tube at increasing rate (D) Expanding tube at constant rate
Last Answer : (B) Long pipe at decreasing rate
Description : Steady non-uniform flow is exemplified by flow through a/an (A) Long pipe at constant rate (B) Long pipe at decreasing rate (C) Expanding tube at increasing rate (D) Expanding tube at constant rate
Last Answer : (D) Expanding tube at constant rate
Description : Unsteady non-uniform flow is represented by flow through a/an (A) Long pipe at constant rate (B) Long pipe at decreasing rate (C) Expanding tube at increasing rate (D) Expanding tube at constant rate
Last Answer : (C) Expanding tube at increasing rate
Description : Generally, first portion of a logistic curve for the population growth of a developing city, represents the growth of (A) Increasing (B) Decreasing (C) Constant (D) All the above
Last Answer : (A) Increasing
Description : As the time is passing, entropy of the universe (A) Is increasing (B) Is decreasing (C) Remain constant (D) Data insufficient, can't be predicted
Last Answer : (A) Is increasing
Description : An example of unsteady non uniform flow is the flow of liquid under pressure through a (A) Tapering pipe at constant flow rate (B) Tapering pipe at either decreasing or increasing flow rate (C) Long pipeline of constant diameter (D) None of these
Last Answer : (B) Tapering pipe at either decreasing or increasing flow rate
Description : A volume of air at constant barometric pressure may be brought to dew point by (A) Increasing the temperature (B) Decreasing the temperature (C) Neither (a) nor (b) (D) Both (a) and (b)
Last Answer : Answer: Option B
Description : The total energy of each particle at various places in the case of perfect incompressible fluid flowing in continuous stream (A) Keeps on increasing (B) Keeps on decreasing (C) Remain constant (D) May increase/decrease
Last Answer : Answer: Option C
Description : If the production possibility curve is linear, then production is said to be subject of (a) constant opportunity cost (b) decreasing opportunity cost © Increasing opportunity cost (d) first increasing then decreasing opportunity cost.
Last Answer : (a) constant opportunity cost
Description : Total output is maximum when (a) MP =0 ; (b) MP is increasing ; (c) MP is decreasing ; (d) MP is constant
Last Answer : (a) MP =0 ;
Description : The magnifying power of an astronomical telescope can be decreased by – (1) decreasing the focal length of the eyepiece (2) increasing the focal length of the eyepiece (3) increasing the focal length of the objective (4) None of these
Last Answer : (2) increasing the focal length of the eyepiece Explanation: The magnifying power (M) of astronomical is given by M = (focal length of objective)/(focal length of eye piece). This ... piece should be small. Similarly, for decreased magnification, focal length of eye piece should be increased.
Description : Current entering and leaving a point in a circuit should be A. equal B. decreasing C. increasing D. variable
Last Answer : equal
Description : On scale of building, gravitational field is A. increasing B. decreasing C. uniform D. varying
Last Answer : decreasing
Description : Ice skating is possible and practical because of a unique property of water. Is it because: w) The coefficient of kinetic friction of steel on frozen water decreases with decreasing temperature x ... sublimes y) The melting point decreases with increasing pressure z) Ice is a good thermal insulator
Last Answer : ANSWER: Y -- THE MELTING POINT DECREASES WITH INCREASING PRESSURE
Description : The magnifying power of an astronomical telescope can be decreased by (1) decreasing the focal length of the eyepiece (2) increasing the focal length of the eyepiece (3) increasing the focal length of the objective (4) None of these
Last Answer : increasing the focal length of the eyepiece
Description : If no external force acts on a system of bodies, the total linear momentum of the system of bodies remains constant. Which law states that? (1) Newton’s first law (2) Newton’s Second Law (3) Newton’s Third Law (4) Principle of conservation of linear momentum
Last Answer : (4) Principle of conservation of linear momentum Explanation: Conservation of linear momentum. The principle that the linear momentum of a system has constant magnitude and direction if the system is subjected to no external force. Also called law of conservation of linear momentum
Description : If no external force acts on a system of bodies, the total linear momentum of the system of bodies remains constant. Which law states this? (1) Newton first law (2) Newton second law (3) Newton third law (4) Principle of conservation of linear momentum
Last Answer : (4) Principle of conservation of linear momentum Explanation: Principle of conservation of linear momentum states If no external force acts on a system of bodies, the total linear momentum of the system of bodies remains constant.