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Assertion : The transition of electrons n3 gives n2 in H atom will emit greater energy then n4 gives n3. Reason : n3 and n2 are closer to nucleus than n4.
27
Nov
Assertion : The transition of electrons n3 gives n2 in H atom will emit greater energy then n4 gives n3. Reason : n3 and n2 are closer to nucleus than n4. Assertion : The transition of electrons n3 gives n2 in H atom will emit greater energy then n4 gives n3. Reason : n3 and [...]
Two thin discs, each of mass M and radius r meter, are attached as shown in the fig. to form a rigid body. The rotational inertia of this body about an axis perpendicular to the plane of disc B passing through its centre is
27
Nov
Two thin discs, each of mass M and radius r meter, are attached as shown in the fig. to form a rigid body. The rotational inertia of this body about an axis perpendicular to the plane of disc B passing through its centre is are attached as shown in the fig. to form a rigid [...]
A car starts from rest and moves on a surface in which the coefficient of friction between the road and the tyres increases linearly with distance (x). The car moves with the maximum possible acceleration. The kinetic energy (E) of the car will depend on x as
27
Nov
A car starts from rest and moves on a surface in which the coefficient of friction between the road and the tyres increases linearly with distance (x). The car moves with the maximum possible acceleration. The kinetic energy (E) of the car will depend on x as A block of mass m starting from rest [...]
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A block of mass m starting from rest slides down a smooth inclined plane of gradient θ ,
fixed in a lift moving upwards with an acceleration a0 as shown in figure. If the base of the inclined plane has length L ,
the time taken by the block to slide from top to bottom of the inclined plane ,
will be ,
Two circular discs are of same thickness. The diameter of A is twice that of B. The moment of inertia of A as compared to that of B is
27
Nov
Two circular discs are of same thickness. The diameter of A is twice that of B. The moment of inertia of A as compared to that of B is Two circular discs are of same thickness. The diameter of A is twice that of B. The moment of inertia of A as compared to that [...]
Four identical rods are joined end to end to form a square. The mass of each rod is M. The moment of inertia of the square about the median line is
27
Nov
Four identical rods are joined end to end to form a square. The mass of each rod is M. The moment of inertia of the square about the median line is Four identical rods are joined end to end to form a square. The mass of each rod is M. The moment of inertia of [...]
A body of mass 40 kg wants to climb up a rope hanging vertically. The rope can withstands a maximum tension of 500 N. What is the maximum acceleration with which the boy can climb rope? Take g=10m/s^2
27
Nov
A body of mass 40 kg wants to climb up a rope hanging vertically. The rope can withstands a maximum tension of 500 N. What is the maximum acceleration with which the boy can climb rope? Take g=10m/s^2 A body of mass 40 kg wants to climb up a rope hanging vertically. The rope can [...]
A mass of 1kg is suspended by means of a thread. The system is (i) lifted up with an acceleration of 4.9ms^−1 . (ii) lowered with an acceleration of 4.9ms^−2 . The ratio of tension in the first and second case is
27
Nov
A mass of 1kg is suspended by means of a thread. The system is (i) lifted up with an acceleration of 4.9ms^−1 . (ii) lowered with an acceleration of 4.9ms^−2 . The ratio of tension in the first and second case is A block of mass m starting from rest slides down a smooth inclined [...]
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A block of mass m starting from rest slides down a smooth inclined plane of gradient θ ,
fixed in a lift moving upwards with an acceleration a0 as shown in figure. If the base of the inclined plane has length L ,
the time taken by the block to slide from top to bottom of the inclined plane ,
will be ,
A man sits on a chair supported by a rope passing over a frictionless fixed pulley. The man who weighs 1000 N exerts a force of 450 N on the chair downwards while pulling on the rope. If the chair weighs 250 N and g is 10ms^−2, then the acceleration of the chair is
27
Nov
A man sits on a chair supported by a rope passing over a frictionless fixed pulley. The man who weighs 1000 N exerts a force of 450 N on the chair downwards while pulling on the rope. If the chair weighs 250 N and g is 10ms^−2, then the acceleration of the chair is A [...]
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A block of mass m starting from rest slides down a smooth inclined plane of gradient θ ,
fixed in a lift moving upwards with an acceleration a0 as shown in figure. If the base of the inclined plane has length L ,
the time taken by the block to slide from top to bottom of the inclined plane ,
will be ,
A person in an elevator accelerating upwards with an acceleration of 2 ms^−2 , tosses a coin vertically upwards with a speed of 20 ms^−1 . After how much time will the coin fall back into his hand? (Take g=10ms^−2)
27
Nov
A person in an elevator accelerating upwards with an acceleration of 2 ms^−2 , tosses a coin vertically upwards with a speed of 20 ms^−1 . After how much time will the coin fall back into his hand? (Take g=10ms^−2) A person in an elevator accelerating upwards with an acceleration of 2 ms^−2 tosses a [...]
One mole of calcium phosphide on reaction with excess water gives (a) One mole of phosphine (b) Two moles of phosphoric acid
27
Nov
One mole of calcium phosphide on reaction with excess water gives (a) One mole of phosphine (b) Two moles of phosphoric acid One mole of calcium phosphide on reaction with excess water gives (a) One mole of phosphine (b) Two moles of phosphoric acid November 27, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma [...]