A stone is dropped from a minar of height h and it reaches after t seconds on earth. From the same minar if two stones are thrown (one upwards and other downwards) with the same velocity u and they reach the earth surface after t1 and t2 seconds respectively, then

Anonymous User Physics Laws of Motion and Friction 06 Jun, 2020 192 views

A car is moving with c/2 a stone is thrown from the car with speed c/root 2 at 45 degree with the direction of velocity of the car. What is the angle as seen from the ground?

Anonymous User Physics 06 Jun, 2020 70 views

If f(x + y) = f(x).f(y) x, y and f(5) = 2, f'(0) = 3, then f'(5) is

Anonymous User Maths Differential Calculus 05 Jun, 2020 59 views

The maximum distance from origin of a point on the curve x = a sint – b sin(at/b)

y = a cost – b cos(at/b), both a, b > 0 is

Anonymous User Maths Differential Calculus 05 Jun, 2020 57 views

If f(1) = 1, f'(1) = 2, then what is ?

Anonymous User Maths Differential Calculus 05 Jun, 2020 55 views

f(x) and g(x) are two differentiable function on [0, 2] such that fn(x) - gn(x) = 0, f'(1) = 2g' (1) = 4, f(2) = 3g(2) = 9 then f(x) – g(x) at x = 3/2 is

Anonymous User Maths Differential Calculus 05 Jun, 2020 56 views

f is defined in [–5, 5] as ,

Anonymous User Maths Differential Calculus 05 Jun, 2020 50 views

([x] denotes greatest integer less than or equal to x)

Anonymous User Maths Differential Calculus 05 Jun, 2020 50 views

The first two terms of a geometric progression add up to 12. The sum of the third and the fourth terms is 48. If the terms of the geometric progression are alternately positive and negative, then the first term is

Anonymous User Maths Sequences and Series 05 Jun, 2020 58 views

In a geometric progression consisting of positive terms, each term equals the sum of the next two terms. Then what will be the common ratio of this progression?

Anonymous User Maths Sequences and Series 05 Jun, 2020 57 views

The sum of the series  upto infinity is

Anonymous User Maths Sequences and Series 05 Jun, 2020 58 views

If a1 , a2 , ..., an are in H.P., then the expression a1a2 + a2a3 + ... + an-1an is equal to

Anonymous User Maths Sequences and Series 05 Jun, 2020 57 views

Let a1 , a2 , a3 , ... be terms of an A.P. If  then  equals

Anonymous User Maths Sequences and Series 05 Jun, 2020 51 views

If the function f(x) = 2x3 – 9ax2 + 12a2x + 1, where a > 0, attains its maximum and minumum at p and q respectively such that p2 = q, then a equals?

Anonymous User Maths Differential Calculus 05 Jun, 2020 55 views

If f(x) = xn, then the value of  is

Anonymous User Maths Differential Calculus 05 Jun, 2020 50 views

If  then what is the value of k?

Anonymous User Maths Differential Calculus 05 Jun, 2020 50 views

If 2a+ 3b+ 6c= 0 (a,b,c  R) then the quadratic equation ax2 + bx + c = 0 has

Anonymous User Maths Differential Calculus 05 Jun, 2020 59 views

Let f(2) = 4 and f'(2) = 4 then  equals

Anonymous User Maths Differential Calculus 05 Jun, 2020 50 views

A car starts moving rectilinearly, first with acceleration 5 m/s^2 (the initial velocity is equal to zero), then uniformly , and finaly , decelerating at the same rate, comes to stop.Total time of motion equals to 25 sec . The avg velocity during that time is equal to 72 km/hr .How long does the car move uniformly?

Anonymous User Physics 05 Jun, 2020 80 views

Which is the smallest element in the periodic table and why ???

Anonymous User Chemistry Periodic Properties 05 Jun, 2020 70 views

Find the angle of projection at when horizontal range and maximum height of a projectile are equal?

Anonymous User Physics Kinematics 04 Jun, 2020 91 views

A swimmer wants to reach to a point just opposite on the other bank of the river. How should he swim and why?

Anonymous User Physics Kinematics 04 Jun, 2020 492 views

A ball is dropped gently from the top of tower and another ball is thrown horizontally at same time.Which ball will hit the ground first?

Anonymous User Physics Kinematics 04 Jun, 2020 138 views

A stone is projected horizontally with 20 m/s from top of a tall building. Calculate its position and velocity after 3 sec neglecting the air resistance?

Anonymous User Physics Kinematics 04 Jun, 2020 70 views

A stone is projected horizontally with 20 m/s from top of a tall building. Calculate its position and velocity after 3 sec neglecting the air resistance?

Anonymous User Physics Kinematics 04 Jun, 2020 710 views

If the displacement of a body is proportional of square of time, state whether the body is moving with uniform velocity or uniform acceleration?

Anonymous User Physics Kinematics 03 Jun, 2020 68 views

Two stones P and Q of different masses m and 2m respectively are dropped simultaneously from top of a tower and reach the ground with different energies . Which one is faster?

Anonymous User Physics Kinematics 03 Jun, 2020 460 views

Can an object with constant acceleration reverse its direction of travel ? Explain

Anonymous User Physics Kinematics 03 Jun, 2020 74 views

If the constant of gravitation (G), Planck's constant (h) and the velocity of light (c) be chosen as fundamental units. The dimensions of the radius of gyration is

Anonymous User Physics Units and Dimension 02 Jun, 2020 75 views

The magnitude of any physical quantity

Anonymous User Physics Units and Dimension 02 Jun, 2020 60 views

What is the relationship between dyne and newton of force?

Anonymous User Physics Units and Dimension 02 Jun, 2020 64 views

Wavelength of ray of light is 0.00006 m. It is equal to

Anonymous User Physics Units and Dimension 02 Jun, 2020 83 views

X = 3YZ*Z find dimensions of Y in (MKSA) system, if X and Z are the dimensions of capacity and magnetic field respectively

Anonymous User Physics Units and Dimension 02 Jun, 2020 67 views

Number of particles crossing unit area perpendicular to X-axis in unit time is given by

n =

are number of particles per unit volume in the position x1 and x2. Find dimensions of D called as diffusion constant

Anonymous User Physics Units and Dimension 02 Jun, 2020 52 views

If L, C and R represent inductance, capacitance and resistance respectively, then which of the following does not represent dimensions of frequency?

Anonymous User Physics Units and Dimension 02 Jun, 2020 57 views

A projectile is launched with an initial velocity of 30 m/s at angle of 60 degree above the horizontal. Calculate the magnitude and direction of its velocity 5s after launch?

Anonymous User Physics Kinematics 02 Jun, 2020 97 views

An object is dropped from the top of the tower of height 156.8 m and the same time another object is thrown vertically upward with velocity of 78.1 mm/s from the foot of the tower, find when and where two object meet?

Anonymous User Physics Kinematics 01 Jun, 2020 659 views

A cannon fires successively two shells from the same point with velocity v0 = 250m/s ; the first at the angle  =60° and the second at the angle  =45° to the horizontal, the azimuth being the same. Neglecting the air drag, find the approximate time interval between firings leading to the collision of the shells (g = 9.8 m/s2.)

Anonymous User Physics 01 Jun, 2020 57 views

A block of mass m is pulled on an incline surface having coefficient of friction  = 1 & angle of inclination  = 30°, with the horizontal, such that required external force is minimum. The angle made by this force with the incline is :

Anonymous User Physics 01 Jun, 2020 57 views

A particle is projected with speed 30m/s at angle 22.5° with horizontal from ground as shown. AB and CD are parallel to y-axis and B is highest point of trajectory of particle. CD/AB is

Anonymous User Physics 01 Jun, 2020 71 views

Each of the two block shown in the figure has mass m. The pulley is smooth and the coefficient of friction for all surfaces in contact is . A constant horizontal force P applied in two cases shown in such a way that block A start just sliding then the value of minimum force P in case-I and case-II is :

Anonymous User Physics 01 Jun, 2020 55 views

Let Tr be the rth term of an A.P. whose first term is a and common difference is d. If for some positive integers m, n, m n, Tm = 1/n and Tn = 1/m, then a – d equals

Anonymous User Maths Sequences and Series 01 Jun, 2020 61 views

Let R1 and R2 respectively be the maximum ranges up and down on an inclined plane and R be the maximum range on the horizontal plane. Then, R1 ,R, R2 are in

Anonymous User Maths Sequences and Series 01 Jun, 2020 58 views

If x1 , x2 , x3 and y1 , y2 , y3 are both in G.P. with the same common ratio, then the points (x1 ,y1), (x2 ,y2) and (x3 , y3)

Anonymous User Maths Sequences and Series 01 Jun, 2020 56 views

The sum of the series is equal to

Anonymous User Maths Sequences and Series 01 Jun, 2020 53 views

Let f(x) be a polynomial function of second degree. If f(1) = f(–1) and a, b, c are in A.P., then   and  are in

Anonymous User Maths Sequences and Series 01 Jun, 2020 64 views

If the system of linear equations x + 2ay + az = 0, x + 3by + bz = 0, x + 4cy + cz = 0 has a non­zero solution, then a, b, c

Anonymous User Maths Sequences and Series 01 Jun, 2020 53 views

Fifth term of an GP is 2, then the product of its 9 terms is

Anonymous User Maths Sequences and Series 01 Jun, 2020 53 views