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 64 views

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

Anonymous User Chemistry Periodic Properties 05 Jun, 2020 69 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 67 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 145 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 92 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 66 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 131 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 64 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 241 views

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

Anonymous User Physics Kinematics 03 Jun, 2020 64 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 66 views

The magnitude of any physical quantity

Anonymous User Physics Units and Dimension 02 Jun, 2020 53 views

What is the relationship between dyne and newton of force?

Anonymous User Physics Units and Dimension 02 Jun, 2020 56 views

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

Anonymous User Physics Units and Dimension 02 Jun, 2020 61 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 58 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 51 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 56 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 71 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 172 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 53 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 55 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 57 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 52 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 56 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 54 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 54 views

The sum of the series is equal to

Anonymous User Maths Sequences and Series 01 Jun, 2020 52 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 57 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

What is the value of 21/4 41/8 . 81/6 ... ?

Anonymous User Maths Sequences and Series 01 Jun, 2020 51 views

Sum of infinite number of terms in GP is 20 and sum of their square is 100. The common ratio of GP is

Anonymous User Maths Sequences and Series 01 Jun, 2020 52 views

13 – 23 + 33 – 43 + ... + 93 =

Anonymous User Maths Sequences and Series 01 Jun, 2020 51 views

If 1, log9(31-x + 2), log3[4.3x– 1] are in AP. then x equals

Anonymous User Maths Sequences and Series 01 Jun, 2020 52 views

Statement­1 :

Statement­2 :

What is the correct choice between Statement­1 (Assertion) and Statement­2 (Reason)?

Anonymous User Maths Binomial Theorem 01 Jun, 2020 61 views

In the binomial expansion of (a – b)n, n ≥ 5, the sum of 5th and 6th terms is zero, then a/b equals

Anonymous User Maths Binomial Theorem 01 Jun, 2020 52 views

For natural numbers m, n if (1 – y)m(1 + y)= 1 + a1y + a2y2 + ..., and a1 = a2 = 10, then what is (m, n)?

Anonymous User Maths Binomial Theorem 01 Jun, 2020 52 views

If the expansion in powers of x of the function  is a0 + a1x + a2x2 + a3x3 + ..., then what is an?

Anonymous User Maths Binomial Theorem 01 Jun, 2020 58 views

The sum of the series

Anonymous User Maths Binomial Theorem 01 Jun, 2020 50 views

If x is so small that x3 and higher powers of x may be neglected, then  may be approximated

Anonymous User Maths Binomial Theorem 01 Jun, 2020 50 views

If the coefficient of x7 in  equals the coefficient of x-7 in  then what is the relation between a and b?

Anonymous User Maths Binomial Theorem 01 Jun, 2020 51 views

If sn =   and tn =  , then tn / sn is equal to

Anonymous User Maths Binomial Theorem 01 Jun, 2020 50 views

What is the coefficient of xin the expansion of (1 + x)(1 – x)n?

Anonymous User Maths Binomial Theorem 01 Jun, 2020 53 views

The coefficient of the middle term in the binomial expansion in powers of x of (1 + ax)4 and of (1 – ax)6 is the same if a equals

Anonymous User Maths Binomial Theorem 01 Jun, 2020 52 views

What is the number of integral terms in the expansion of ?

Anonymous User Maths Binomial Theorem 01 Jun, 2020 60 views

If x is positive, what is the first negative term in the expansion of (1 + x)27/5?

Anonymous User Maths Binomial Theorem 01 Jun, 2020 51 views

If the sum of the coefficients in the expansion of (a + b)n is 4096, then what is the greatest coefficient in the expansion?

Anonymous User Maths Binomial Theorem 01 Jun, 2020 54 views

The coefficients of xp and xq in the expansion of (1 + x)p+q are

Anonymous User Maths Binomial Theorem 01 Jun, 2020 52 views