Recent questions in 11th Physics

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Assertion: Magnitude of resultant of two vectors may be less than the magnitude of either vector. Reason: Vector addition is

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

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Assertion: Vector addition of two vectors is always greater than their vector subtraction. Reason: At `theta= 90°`, addition and subtraction of vectors are

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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: At highest point of a projectile, dot product of velocity and acceleration is zero. Reason: At highest point, velocity and acceleration are mutually

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Assertion: A particle is projected with speed `u` at an angle `theta` with the horizontal. At any time during motion, speed of particle is `v` at angle `alpha` with the vertical, then `v sin alpha` is always constant throughout the motion. Reason: In case of projectile motion, magnitude of radial acceleration at topmost point is

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

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Assertion: For projection angle `tan^(-1) (4)`, the horizontal and maximum height of a projectile are equal. Reason: The maximum range of projectile is directly proportional to square of velocity and inversely proportional to acceleration due to

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

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Assertion: The range of a projectile is maximum at 45°. Reason: At `theta = 45°`, the value of `sin theta` is

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

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Assertion: Sum of maximum height for angles `alpha and 90°-alpha` is independent of the angle of projection. Reason: For angles `alpha and 90°-alpha`, the horizontal range R is

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Assertion: The maximum height of projectile is always 25% of the maximum range. Reason: For maximum range, projectile should be projected at

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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

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

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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

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

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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.Set of vectors

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

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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.`| lambda A|

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

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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.Among the following

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

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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

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

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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.Two bodies are held separated by 9.8 m vertically

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

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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.If two objects `P and Q` move along parallel

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

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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.A train is moving towards East and a car

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

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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

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

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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.A girl riding a bicycle with a speed of

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

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