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The person who had been awarded the title of the Father of Physics of 20th century

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C hoose the correct statem ent from the following

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Obtain the dimensional formula for universal gas

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Assertion: When we change the unit of measurement of a quantity, its numerical value changes. Reason: Smaller the unit of measurement smaller is its numerical

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Assertion: Out of two measurements `l = 0.7 m and l = 0.70 m`, the second one is more accurate. Reason: In every measurement, the last digit is not accurately

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A car moves along a straight line according to the `x-t` graph given below. The instantaneous velocity of the car at `t = t`,

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All the graphs below are intended to represent the same motion. One of them does it incorrectly. Pick it

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Which of the following statement is

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A is a vector with magnitude A, then the unit vector a in the direction of vector A

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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

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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

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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

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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

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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

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A projectile is given an initial velocity of `(hati + 2hatj) ms^(-1)`, where `hati` is along the ground and `hatj` is along vertical. If `g` is `10 ms^(-2)`, then the equation of its trajectory

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If a running bus stops suddenly, our feet stop due to friction, but the rest of the body continues to move forward due

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A smaller and a bigger iron balls are dropped from a small height on a glass pane placed on a table. Only bigger ball breakes the glass pane,

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If a box is lying in the compartment of an accelerating train and box is stationary relative to the train. What force cause the acceleration of the

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Which one of the following statement is

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Assertion: It is not always necessary that external agency of force is in contact with the object while applying force on object. Reason: A stone released from top of a building accelerates downward due to gravitational pull of the

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