Recent questions in 11th Physics

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Three vectors are given as `P = 3hati - 4hatj ,Q = 6 hati - 8 hatj and R = (3/4) hati - hatj`, then which of the following is

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

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A vector is inclined at an angle 60° to the horizontal. If its rectangular component in the horizontal direction is `50 N`, then its magnitude in the vertical direction

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

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The angle `theta` between the vector `p=hati + hatj + hatk` and unit vector along X-axis

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

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Two vectors `P and Q` are inclined at an angle `theta and R` is their resultant as shown in the figure.Keeping the magnitude and the angle of the vectors same, if the direction of `P and Q` is interchanged, then their is a change in which of the following with regard to

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

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It is found that `| A + B | = | A|`. This necessarily

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

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The sides of a parallelogram are represented by vectors `p=5hati - 4hatj+3hatk and q=3hati + 2hatj - hatk`. Then, the area of the parallelogram

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

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If `a • b = |a xx b |`, then the angle ` theta` between `a and b` will

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

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Position vector `r` of a particle P located in a plane with reference to the origin of an `xy`-plane as shown in the figure below is given

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

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Suppose a particle moves along a curve shown by the thick line and the positions of particle are represented by `P` at `t` and `P'` at `t'`.where, coordinates of P is `(4, 3) and P' is (7, 6)`. Net displacement of the particle will

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

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A particle moves in xy-plane from positions `(2m, 4m)` to `(6m, 8m)` is `2s`. Magnitude and direction of average velocity

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

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The direction of instantaneous velocity is shown

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

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The position of a particle is given by `r= 3t hati + 2t^2 hatj + 5hatk`, then the direction of `v (t)` at `t = 1 s`

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

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In three dimensional system, the position coordinates of a particle (in motion) are given below `x = a cos omega t``y = a sin omega t``z = a omega t` The velocity of particle will

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

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The coordinates of a moving particle at any time t are given by, `x = 2t^3 and y = 3t^3. Acceleration of the particle is given

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

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A particle starts from origin at `t= 0` with a velocity `5.0 hati ms^(-1)` and moves in `xy`-plane under action of force which produces a constant acceleration of `(3.0 hati + 2.0 hatj) ms^(-2)`. What is the `y`-coordinate of the particle at the instant, if `x`-coordinate is `84

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

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A car driver is moving towards a fired rocket with a velocity of `8hati ms^(-1)` . He observed the rocket to be moving with a speed of `10 ms^(-1)`. A stationary observer will see the rocket to be moving with a speed

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

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A man standing on a road has to hold his umbrella at 30° with the vertical to keep the rain away. He throws the umbrella and starts running at `10 kmh ^(-1)`.He finds that raindrops are hitting his head vertically. The actual speed of raindrops

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

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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

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

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When a ball is thrown obliquely from the ground level, then the `x`-component of the

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

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The motion of an object that is in flight after being projected is a result of two simultaneously occurring components of motion, which are the components

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

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