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Maximum absolute error in the sum or difference of two quantities is equal to sum of the absolute error in the individual quantities, i.e.` Z = A + B,` then `± DeltaZ = ± DeltaA ± DeltaB`Maximum fractional error in a product or division of quantities is equal to the sum of fractional errors in the individual quantities `i.e.' 'AB or A/B,` then `(DeltaZ)/Z=+-(DeltaA)/A+(DeltaB)B`Two resistors of resistances `R_1= 100 ± 3Omega and R_2 = 200 ± 4Omega` are connected (a) in series and (b) in parallelFind the equivalent resistance of the series

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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In figure, displacement-time `(x-t)` graph given below, the average velocity between time `t=5 s and t = 7 s`

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The speed-time graph of a particle moving along a fixed direction is as shown in the figure. The distance traversed by the particle between `t= 0 s` to `t = 10 s`

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An object is moving with velocity `10 ms^(-1)`. A constant force acts for `4 s` on the object and gives it a speed of `2 ms^(-1)` in opposite direction. The acceleration produced

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For motion of the car between `t = 18 s and t = 20 s,` which of the given statement is

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Assertion: For motion along a straight line and in the same direction, the magnitude of average velocity is equal to the average speed. Reason: For motion along a straight line and in the same direction, the magnitude of displacement is not equal to the path

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Suppose an object is at point P at time t moves to P' and then comes back to P. Then, displacement is

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Choose the correct option regarding the given figure.

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A girl can swim with speed `5 kmh ^(-1)` in still water. She crosses a river `2 km` wide, where the river flows steadily at `2 kmh^(-1)` and she makes strokes normal to the river current. Find how far down the river she go when she reaches the other

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A car revolves uniformly in a circle of diameter 0.80m and completes 100 rev min'1. Its angular velocity

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If 2 balls are projected at angles 45° and 60° and the maximum heights reached are same, then the ratio of their initial velocities i s

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Two cars of masses `m_1 and m_2` are moving in circles of radii `r_1 and r_2`, respectively. Their speeds are such that they make complete circles in the same time `t`. The ratio of their centripetal accelerations is

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Assertion: In case of projectile motion, the magnitude of rate of change of velocity is variable. Reason: In projectile motion, magnitude of velocity first increases and then decreases during the

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Assertion: Uniform circular motion is uniformly accelerated motion. Reason: Kinematic equations for uniform acceleration motion can be applied in the case of uniform circular

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Vectors are the physical quantities which have both magnitudes and directions and obey the triangle/parallelogram laws of addition and subtraction. It is specified by giving its magnitude by a number and its direction, e.g. Displacement, acceleration, velocity, momentum, force, etc. A vector is represented by a bold face type and also by an arrow placed over a letter, i.e. `F, a, b` or `vecF,veca,vecb`.The length of the line gives the magnitude and the arrowhead gives the direction.The point P is called head or terminal point and point 0 is called tail or initial point of the vector OP.Amongst the following

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Vectors are the physical quantities which have both magnitudes and directions and obey the triangle/parallelogram laws of addition and subtraction. It is specified by giving its magnitude by a number and its direction, e.g. Displacement, acceleration, velocity, momentum, force, etc. A vector is represented by a bold face type and also by an arrow placed over a letter, i.e. `F, a, b` or `vecF,veca,vecb`.The length of the line gives the magnitude and the arrowhead gives the direction.The point P is called head or terminal point and point 0 is called tail or initial point of the vector OP.The `x and

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Relative Velocity Every motion is relative as it has to be observed with respect to an observer. Relative velocity is a measurement of velocity of an object with respect to other observer. It is defined as the time rate of change of relative position of one object with respect to another.For example, if rain is falling vertically with a velocity `v_r` and a man is moving horizontally with `v_m`, the man can protect himself from the rain if he holds his umbrella in the direction of relative velocity of rain w.r.t. man.Buses A and B are moving in the same

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A body of mass `6 kg` is acted on by a force so that its velocity changes from `3 ms^(-1)` to `5 ms^(-1)`, then change in momentum

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The momentum p (in `kg-ms^(-1)`) of a particle is varying with time t (in second) as `p= 2 + 3t^2`.The force acting on the particle at `t=3 s` will

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Find the force exerted by `5 kg` block on floor of lift, as shown in figure. (Take, `g =

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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