A card is lost from a pack of 52 playing cards. From the remainder of the pack, one card is drawn and is found to be spade. The probability that the missing card is a spade is?

Anonymous User Maths Probability and statistics 26 Mar, 2019 189 views

A spherical conductor of radius 3 m is charged to a potential of 90 V. It is now placed inside another hollow spherical conductor of radius 6 m. Calculate the potential of bigger sphere if the smaller sphere is made to touch the bigger sphere?

Anonymous User Physics 25 Mar, 2019 568 views

Write the set of all positive integers whose cube is odd.

Anonymous User Maths Algebra 25 Mar, 2019 127 views

A bag contains 50 tickets, numbered from 1 to 50. One ticket is drawn at random. What is the probability that

(i) number on the ticket is a perfect square or divisible by 3 ?

(ii) number on the ticket is prime number or greater than 40 ?

Anonymous User Maths Probability and statistics 25 Mar, 2019 91 views

A mass (M) is split into two parts (m) and (M–m). Which are then separated by a certain distance. What ratio m M will maximise the gravitational force between the parts ?A mass (M) is split into two parts (m) and (M–m). Which are then separated by a certain distance. What ratio m/ M will maximise the gravitational force between the parts ?

Anonymous User Physics 16 Mar, 2019 141 views

Two stationary particles of masses M1 and M2 are at a distance 'd' apart. A third particle lying on the line joining the particles, experiences no resultant gravitational forces. What is the distance of this particle from M1 ?

Anonymous User Physics 15 Mar, 2019 985 views

Departure from reason, focus on nature and the supernatural are all features of the literature of what period?

Anonymous User English 14 Mar, 2019 346 views

From a group of 8 boys and 5 girls a committee of 5 is to be formed. Find the probability that the committee contains 3 boys and 2 girls?

Anonymous User Maths 13 Mar, 2019 138 views

Find the differential equation of the family of all circles which pass through the origin and whose centre lie on y–axis?

Anonymous User Maths 11 Mar, 2019 448 views

A pair of dice is thrown 7 times. If getting a total of 7 is considered a success, what is the probability of

1.  no success ?
2.  6 successes ?
3.  at least 6 successes ?
4.  at most 6 successes ?

Anonymous User Maths 10 Mar, 2019 183 views

A problem in statistics is given to three students A, B and C. Their chances of solving the problem are 1/3, 1/4 and 1/5 respectively. If all of them try independently, what is the probability that?

1. (i)  problem is not solved ?
2. (ii)  problem is solved ?
3. (iii)  exactly two students solve the problems

Anonymous User Maths 09 Mar, 2019 122 views

A pair of dice is thrown. If sum of the numbers is an even number, what is the probability that it is a perfect square ?

Anonymous User Maths 08 Mar, 2019 236 views

How many half-lives should eclapse for a 1st​​​​ order reaction A → products so that the reaction is atleast 95% completed?

a) 4

b) 5

c) 6

d) 7

Sakshi Yadav Chemistry 07 Mar, 2019 79 views

The rate of a certain reaction depends on concentration according to the equation :

What will be the order of reaction, when concentration (C) :

a) very-very high

b) very-very low

Sakshi Yadav Chemistry 07 Mar, 2019 59 views

I am trying to GST registration in online. But I can receive the message as error from the portal address. I need to solve the problem in GST registration. I am getting some problems for my business related dealings for the reason of not registering GST. So I need to try for the registration process. I need some of helps from you about the successful registration in online. My friends are facing some of issues about the business. I am also share the details to the experts for try to register. i am waiting for the results also here. If you have any problem face like that means how to manage that?.

What is the solution for my problem? I can receive all information and someof reviews from online website. Common ideas and related needed are submitted for the readers in online. I am gettig some Important documents are added with my GST registration form. I am getting some of product details and clear information about my business planning. I have allowed for the companies to invest in my business. I am also getting company pan card for the investment. I do not have any ideas for my GST registration errors. Please friends arrange for the easy method for my successful registration.

I have shared my business address, sale and purchase details, revenue etc from your personal email id. Why the website is always showing error? I am getting some of registered methods with my friends. I need to get GST bill and statements also. I have got some of news and applications from online clients. They are given some ideas for developing my product's sale. I am getting more knowledge and skills about business in online. I have solved more problems in my business. But it is new one for me. I am really sad to fail in GST registration process. I am need some of reviews and your tips for making good GST registration for my business.

EmilyGeorge General Science 20 Feb, 2019 84 views

A wire has resistance of 24  is bent in the following shape. The effective resistance between A and B is?

Anonymous User Physics 14 Feb, 2019 113 views

An electrical cable of copper has just one wire of radius 9 mm. Its resistance is 5 ohm. This single copper wire of the cable is replaced by 6 different well insulated copper wires each of radius 3 mm. The total resistance of the cable will now be equal to?

Anonymous User Physics 04 Feb, 2019 139 views

A short bar magnet with its north pole facing north forms a neutral point at P in the horizonatal plane. If the magnet is rotated by 90° in the horizontal plane, the net magnetic induction at P is (Horizontal component of earth's magnetic field = BH )

Ashish Yadav Physics 04 Feb, 2019 1810 views

An equation of the plane passing through the points (3, 2, –1), (3, 4, 2) and (7, 0, 6) is 5x + 3y – 2z = l, where l is

Anonymous User Maths 02 Feb, 2019 185 views

The maximum peak to peak voltage of an AM wire is 24 mV and the minimum peak to peak voltage is 8 mV. The modulation factor is?

Anonymous User Physics 02 Feb, 2019 145 views

A drunken man takes a step forward with probability 0.4 and backwards with probability 0.6. Find the probability that at the end of eleven steps, he is one step away from the starting point?

Anonymous User Maths 01 Feb, 2019 109 views

A dice is tossed 5 times. Getting an odd number is considered a success. Then the variance of distribution of success is?

Anonymous User Maths 01 Feb, 2019 95 views

A thermally insulated vessel contains an ideal gas of molecular mass M and ratio of specific heats g. It is moving with speed v and it's suddenly brought to rest. Assuming no heat is lost to the surroundings, its temperature increases by:

Anonymous User Physics 01 Feb, 2019 313 views

A particle performs S.H.M. of amplitude A along a straight line. At two positions of the particle, the ratio of speeds is 1/2 and that of potential energy is 1/2 also. Then one position of them (distance from mean position) nearest to the extreme is :

Anonymous User Physics 01 Feb, 2019 131 views

If the frequency of a wave is increased by 25 %, then the change in its wavelength will be: (medium not changed)

Anonymous User Physics 01 Feb, 2019 81 views

A chain of uniform mass density is hanging as shown in figure.The total mass is M and the length is l.When chain is completely fall from the table then what will be the speed of chain?

Anonymous User Physics 24 Jan, 2019 1032 views

A sheet of aluminium foil of negligible thickness is introduced between the plates of a capacitor. The capacitance of the capacitor?

Anonymous User Physics 20 Jan, 2019 161 views

On moving a charge of 20 coulomb by 2 cm, 2 J of work is done, then the potential difference between the points is?

Anonymous User Physics 20 Jan, 2019 147 views

A particle of mass 10 gm is placed in a potential field given by

The frequency of oscillation in cycle/sec is ?

Anonymous User Physics 19 Jan, 2019 1053 views

A particle is projected from ground with an initial velocity 20 m/sec making an angle 60° with horizontal. If R1 and R2 are radius of curvatures of the particle at point of projection and highest point respectively,find the value of R1/R2?

Devendra Yadav Physics 18 Jan, 2019 92 views

The average kinetic energy associated with one mole of gas is?

Anonymous User Chemistry 18 Jan, 2019 129 views

Why the HgO decomposes into its constituent elements on heating ?

Anonymous User Chemistry 17 Jan, 2019 406 views

Name of one chloride which is soluble in hot water as well as in excess of HCl.

Anonymous User Chemistry 17 Jan, 2019 81 views

If there are n capacitors in parallel connected to V volt source, then the energy stored is equal to?

Anonymous User Physics 17 Jan, 2019 174 views

The bob of a simple pendulum is a spherical hollow ball filled with water. A plugged hole near the bottom of the oscillating bob gets suddenly unplugged. During observation, till water is coming out, the time period of oscillation would?

Anonymous User Physics 15 Jan, 2019 69 views

A coin is placed on a horizontal platform which undergoes vertical simple harmonic motion of angular frequency w. The amplitude of oscillation is gradually increased. The coin will leave contact with the platform for the first time

Anonymous User Physics 15 Jan, 2019 189 views

The maximum velocity of a particle, executing simple harmonic motion with an amplitude 7 mm, is 4.4 m/s. The period of oscillation is?

Anonymous User Physics 13 Jan, 2019 119 views

A satellite of mass m revolves around the earth of radius R at a height x from its surface. If g is the acceleration due to gravity on the surface of the earth, the orbital speed of the satellite is?

Anonymous User Physics 12 Jan, 2019 114 views

A particle of mass 10 g is kept on the surface of a uniform sphere of mass 100 kg and radius 10 cm. Find the work to be done against the gravitational force between them to take the particle far away from the sphere.

Anonymous User Physics 11 Jan, 2019 100 views

The time period of a satellite of earth is 5 hour. If the separation between the earth and the satellite is increased to 4 times the previous value, the new time period will become

Anonymous User Physics 09 Jan, 2019 501 views

The escape velocity of a body depends upon mass as?

Anonymous User Physics 09 Jan, 2019 84 views

A round uniform body of radius R, mass M and moment of inertia I rolls down (without slipping) an inclined plane making an angle q with the horizontal. Then its acceleration is

Anonymous User Physics 09 Jan, 2019 146 views

Angular momentum of the particle rotating with a central force is constant due to

Anonymous User Physics 09 Jan, 2019 98 views

A solid sphere, a hollow sphere and a ring are released from top of an inclined plane (frictionless) so that they slide down the plane. Then maximum acceleration down the plane is for (no rolling)?

Anonymous User Physics 09 Jan, 2019 135 views

The moment of inertia of a uniform semicircular disc of mass M and radius r about a line perpendicular to the plane of the disc through the center is?

Anonymous User Physics 08 Jan, 2019 359 views

A uniform chain of length 2 m is kept on a table such that a length of 60 cm hangs freely from the edge of the table. The total mass of the chain is 4 kg. What is the work done in pulling the entire chain on the table?

Anonymous User Physics 03 Jan, 2019 128 views

Two protons of equal kinetic energies enter a region of uniform magnetic field. The
first proton enters normal to the field direction while the second enters at 30 degree to the field direction. Name the trajectories followed by them.

Naveen Singh Physics 03 Jan, 2019 1385 views