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Physics-

General

Easy

Question

A block A is placed over a long rough plank B of same mass as shown in figure. The plank is placed over a smooth horizontal surface. At time t=0, block A is given a velocity v₀ in horizontal direction. Let $v subscript 1 end subscript$ and $v subscript 2 end subscript$ be the velocities of A and B at time t. Then choose the correct graph between $v subscript 1 end subscript$ or $v subscript 2 end subscript$ and t

The correct answer is:

Related Questions to study

Three blocks A , B and C of equal mass m are placed one over the other on a smooth horizontal ground as shown in figure. Coefficient of friction between any two blocks of A,B and C is $fraction numerator 1 over denominator 2 end fraction$ The maximum value of mass of block D so that the blocks A, B and C move without slipping over each other is

Three blocks A , B and C of equal mass m are placed one over the other on a smooth horizontal ground as shown in figure. Coefficient of friction between any two blocks of A,B and C is $fraction numerator 1 over denominator 2 end fraction$ The maximum value of mass of block D so that the blocks A, B and C move without slipping over each other is

physics-General

For the system shown in the figure, the acceleration of the mass m₄ immediately after the lower thread x is cut will be, (assume that the threads are weightless and inextensible, the spring are weightless, the mass of pulley is negligible and there is no friction)

For the system shown in the figure, the acceleration of the mass m₄ immediately after the lower thread x is cut will be, (assume that the threads are weightless and inextensible, the spring are weightless, the mass of pulley is negligible and there is no friction)

physics-General

Given $m subscript A end subscript equals 30 text end text k g comma text end text m subscript B end subscript equals 10 text end text k g comma text end text m subscript C end subscript equals 20 text end text k g$ . The coefficient of friction between A and B $mu subscript 1 end subscript$ = 0.3, between B and C $mu subscript 2 end subscript$ = 0.2 and between C, and ground, $mu subscript 3 end subscript$ = 0.1. The least horizontal force F to start motion of any part of the system of three blocks resting upon one another as shown in figure is ( g = 10 $m divided by s to the power of 2 end exponent$ )

Given $m subscript A end subscript equals 30 text end text k g comma text end text m subscript B end subscript equals 10 text end text k g comma text end text m subscript C end subscript equals 20 text end text k g$ . The coefficient of friction between A and B $mu subscript 1 end subscript$ = 0.3, between B and C $mu subscript 2 end subscript$ = 0.2 and between C, and ground, $mu subscript 3 end subscript$ = 0.1. The least horizontal force F to start motion of any part of the system of three blocks resting upon one another as shown in figure is ( g = 10 $m divided by s to the power of 2 end exponent$ )

physics-General

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$sin invisible function application A plus sin invisible function application B equals square root of 3 left parenthesis cos invisible function application B minus cos invisible function application A right parenthesis not stretchy rightwards double arrow sin invisible function application 3 A plus sin invisible function application 3 B equals$

$sin invisible function application A plus sin invisible function application B equals square root of 3 left parenthesis cos invisible function application B minus cos invisible function application A right parenthesis not stretchy rightwards double arrow sin invisible function application 3 A plus sin invisible function application 3 B equals$

$stack l i m with x rightwards arrow negative 2 below fraction numerator sin to the power of negative 1 end exponent invisible function application left parenthesis x plus 2 right parenthesis over denominator x to the power of 2 end exponent plus 2 x end fraction$ is equal to:

$stack l i m with x rightwards arrow negative 2 below fraction numerator sin to the power of negative 1 end exponent invisible function application left parenthesis x plus 2 right parenthesis over denominator x to the power of 2 end exponent plus 2 x end fraction$ is equal to:

If the chord through the points whose eccentric angles are $alpha$ and $beta$ on the ellipse $fraction numerator x to the power of 2 end exponent over denominator a to the power of 2 end exponent end fraction plus fraction numerator y to the power of 2 end exponent over denominator b to the power of 2 end exponent end fraction$ =1 passes through the focus (ae, 0), then the value of tan $fraction numerator alpha over denominator 2 end fraction$ tan $fraction numerator beta over denominator 2 end fraction$ = 0 is –

If the chord through the points whose eccentric angles are $alpha$ and $beta$ on the ellipse $fraction numerator x to the power of 2 end exponent over denominator a to the power of 2 end exponent end fraction plus fraction numerator y to the power of 2 end exponent over denominator b to the power of 2 end exponent end fraction$ =1 passes through the focus (ae, 0), then the value of tan $fraction numerator alpha over denominator 2 end fraction$ tan $fraction numerator beta over denominator 2 end fraction$ = 0 is –

parallel

For a certain mass of a gas Isothermal relation between ‘P’ and ‘V’ are shown by the graphs at two different temperatures T₁ and T₂ then

For a certain mass of a gas Isothermal relation between ‘P’ and ‘V’ are shown by the graphs at two different temperatures T₁ and T₂ then

physics-General

$K equals sin invisible function application open parentheses pi over 18 close parentheses sin invisible function application open parentheses fraction numerator 5 pi over denominator 18 end fraction close parentheses sin invisible function application open parentheses fraction numerator 7 pi over denominator 18 end fraction close parentheses not stretchy rightwards double arrow K equals$

$K equals sin invisible function application open parentheses pi over 18 close parentheses sin invisible function application open parentheses fraction numerator 5 pi over denominator 18 end fraction close parentheses sin invisible function application open parentheses fraction numerator 7 pi over denominator 18 end fraction close parentheses not stretchy rightwards double arrow K equals$

If the chord joining two points whose eccentric angles are $alpha$ and $beta$ cuts the major axis of an ellipse $fraction numerator x to the power of 2 end exponent over denominator a to the power of 2 end exponent end fraction$ + $fraction numerator y to the power of 2 end exponent over denominator b to the power of 2 end exponent end fraction$ = 1 at a distance c from the centre, then tan $alpha divided by 2$ . tan $beta divided by 2$ is equal to

If the chord joining two points whose eccentric angles are $alpha$ and $beta$ cuts the major axis of an ellipse $fraction numerator x to the power of 2 end exponent over denominator a to the power of 2 end exponent end fraction$ + $fraction numerator y to the power of 2 end exponent over denominator b to the power of 2 end exponent end fraction$ = 1 at a distance c from the centre, then tan $alpha divided by 2$ . tan $beta divided by 2$ is equal to

parallel

P(a cos $theta$ , b sin $theta$ ) is any point on the ellipse $fraction numerator x to the power of 2 end exponent over denominator a to the power of 2 end exponent end fraction$ + $fraction numerator y to the power of 2 end exponent over denominator b to the power of 2 end exponent end fraction$ = 1 $left parenthesis a greater than b right parenthesis$ Now if this ellipse is rotated anticlockwise by 90º and P reaches $straight P to the power of straight prime$ then co-ordinate of $straight P to the power of straight prime$ are -

P(a cos $theta$ , b sin $theta$ ) is any point on the ellipse $fraction numerator x to the power of 2 end exponent over denominator a to the power of 2 end exponent end fraction$ + $fraction numerator y to the power of 2 end exponent over denominator b to the power of 2 end exponent end fraction$ = 1 $left parenthesis a greater than b right parenthesis$ Now if this ellipse is rotated anticlockwise by 90º and P reaches $straight P to the power of straight prime$ then co-ordinate of $straight P to the power of straight prime$ are -

Normal to the ellipse $fraction numerator x to the power of 2 end exponent over denominator 84 end fraction plus fraction numerator y to the power of 2 end exponent over denominator 49 end fraction equals 1$ intersects the major and minor axis at P and Q respectively then locus of the point dividing segment PQ in 2 : 1 is -

Normal to the ellipse $fraction numerator x to the power of 2 end exponent over denominator 84 end fraction plus fraction numerator y to the power of 2 end exponent over denominator 49 end fraction equals 1$ intersects the major and minor axis at P and Q respectively then locus of the point dividing segment PQ in 2 : 1 is -

Given graph gives variation of $fraction numerator P V over denominator T end fraction$ with P for 1gm of oxygen at two different temperatures T₁ and T₂. If density of oxygen $1.427 k g divided by m to the power of 3 end exponent.$ The value of $fraction numerator P V over denominator T end fraction$ at point A and relation $b divided by w T subscript 1 end subscript & T subscript 2 end subscript text is end text$

Given graph gives variation of $fraction numerator P V over denominator T end fraction$ with P for 1gm of oxygen at two different temperatures T₁ and T₂. If density of oxygen $1.427 k g divided by m to the power of 3 end exponent.$ The value of $fraction numerator P V over denominator T end fraction$ at point A and relation $b divided by w T subscript 1 end subscript & T subscript 2 end subscript text is end text$

physics-General

parallel

Legume plants are important for crop production because they :

Legume plants are important for crop production because they :

The limiting value of (cos x)^{1/sin x} as x → 0 is :

The limiting value of (cos x)^{1/sin x} as x → 0 is :

Let f : R → R be a differentiable function satisfying f (x) = f (x – y) f (y) " x, y Î R and f ¢ (0) = a, f ¢ (2) = b then f ¢ (-2) is

Let f : R → R be a differentiable function satisfying f (x) = f (x – y) f (y) " x, y Î R and f ¢ (0) = a, f ¢ (2) = b then f ¢ (-2) is

parallel

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