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 : Object is in equilibrium if resultant force acting on it is A. increasing B. decreasing C. zero D. becomes constant
Last Answer : zero
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 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 : Until a force acts on a body, it's velocity is A. zero B. constant C. increasing D. decreasing
Description : Newton's second law states that the net force acting on a body is equal to the body's time rate of change of: w) acceleration x) mass y) momentum z) inertia
Last Answer : ANSWER: Y -- MOMENTUM
Description : When net torque is zero, will be constant - (1) force (2) angular momentum (3) linear momentum (4) acceleration
Last Answer : (2) angular momentum Explanation: Since a torque (rate of change of angular momentum analogous to force) applied over time is equivalent to a change in angular momentum, then if torque is zero, angular momentum is constant.
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 : 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 : 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 : 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 : An object travelling with constant velocity has A. constant momentum B. zero momentum C. increasing momentum D. decreasing momentum
Last Answer : constant momentum
Description : The resultant of a force acting on a body will be zero, if the body a.Rotates with uniform acceleration b.Moves along a curved path c.Rotates d.Does not rotate e.Rotates with uniform deceleration
Last Answer : d. Does not rotate
Description : According to newton second law of motion, the acceleration of an object equals the net force acting on the object divide by the object?
Last Answer : Mass.
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 : 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 : 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 : 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 : 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 : Air vessel provided in a reciprocating pump is for (A) Increasing the acceleration head (B) Making the friction in pipe uniform (C) Decreasing the acceleration head (D) None of these
Last Answer : (B) Making the friction in pipe uniform
Description : Acceleration of a rocket having mass 5000 kg and resultant force acting on it is 200,000 N is A. 50 m s-2 B. 56 m s-2 C. 70 m s-2 D. 40 m s-2
Last Answer : . 40 m s-2
Description : A force of 15 newtons is acting on an object which has a mass of 3 kilograms. If this is the only force acting on the object, what is the acceleration of the object?
Last Answer : ANSWER: 5 METERS PER SECOND SQUARED
Description : The acceleration of a particular body is directly proportional to the resultant force acting on it & inversely proportional to its mass. a. Pascal's Law b. Joule's Law c. Newton's Law d. None of the above
Last Answer : Newton's Law
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 : 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 : A particle is moving in a uniform circular motion with constant speed v along a circle of radius r. The acceleration-of the particle is – (1) zero (2) V/r (3) V/r² (4) V²/r
Last Answer : (4) V²/r Explanation: When a particle is moving in a uniform circular motion with constant speed and radius. the acceleration of the particle is given by v2/r. The particle will exhibit centripetal acceleration.
Description : When ball having a projectile motion is rising up, it A. decelerates B. accelerates C. rises up with constant acceleration D. acceleration becomes zero
Last Answer : decelerates
Description : A satellite travels at a constant speed in a circular orbit. The acceleration of the satellite is w) zero x) toward the center of the orbit y) away from the center of the orbit z) at a tangent to the orbit
Last Answer : ANSWER: X -- TOWARD THE CENTER OF THE ORBIT
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 : Which of the following statements dealing with simple harmonic motion of a mass-spring system is TRUE? w) The acceleration is largest when the oscillating mass is instantaneously at rest. x) The ... of the motion. z) The acceleration is larger when the oscillating mass has its greatest velocity.
Last Answer : ANSWER: W -- THE ACCELERATION IS LARGEST WHEN THE OSCILLATING MASS IS INSTANTANEOUSLY AT REST
Description : Assertion If a charged particle is pronected in a region, where `B` is perpendicular to velocity of projection, then the net force acting on the parti
Last Answer : Assertion If a charged particle is pronected in a region, where `B` is perpendicular to velocity of ... D. If Assertion is false but Reason is true.
Description : What is the relation between mass and acceleration if the force applied to an object is constant ?
Last Answer : The lower the mass, the higher the acceleration.
Description : For a body to be in equilibrium, which of the following conditions must exist? w) no forces may be acting on the body. x) the body must be accelerating. y) the velocity of the body must be zero. z) the sum of the forces acting on the body must be equal to zero.
Last Answer : ANSWER: Z -- THE SUM OF THE FORCES ACTING ON THE BODY MUST BE EQUAL TO ZERO.
Description : What will happened to the acceleration of an object if you double both the mass and the unbalanced force acting on it?
Last Answer : If both the mass and the net force on an object are doubled,then the object's acceleration will not change.
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