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The line y=mx+1 is a tangent to the curve y²=4x if the value of m is ___________

The line y=mx+1 is a tangent to the curve y2=4x if the value of m is 1 For the given curve the equation of the tangent is y = mx + 1... View Article

How to add binary ones at once?

A binary number system is one of the four types of the number system. In computer applications, where binary numbers are represented by only two... View Article

Four fifth of a number is more than three fourth of the number by 4. Find the number.

Let us assume the number to be x As per the given conditions Four fifth number is 4/ 5x. Three fourth of numbers ⇒3/4 x. The... View Article

Sides of two similar triangles are in the ratio 4 9. What will be the ratio of area of these triangles?

Given Sides of two similar triangles are in the ratio 4: 9. Find out We have to determine the areas of these triangles are in the ratio.... View Article

A coin is tossed 3 times what is the probability of getting at least two tails

Probability is the measurement of chances – the likelihood that an event will occur. If the probability of an event is high, it is more... View Article

If a system of equations in two variables has a unique solution, then the lines on the graph are_________

If a system of equations in two variables has a unique solution, then the lines on the graph are intresecting An equation is said to... View Article

Find the measure of each exterior angle of a regular pentagon, hexagon, heptagon, polygon of 15 sides.

An exterior angle is an angle that is formed by one of the sides of any closed shape structure such as polygon and the extension of its adjacent... View Article

Five boys and three girls are seated at random in a row. Find the probability that no boy sits between two girls.

Probability is a measure of the likelihood of an event to occur. Many events cannot be predicted with total certainty. The probability formula... View Article

When light travels from a rarer to a denser medium, the speed of light in the medium _______

When light travels from a rarer to a denser medium, the speed of light in the medium decreases Let us first know about different mediums... View Article

Equal current i flows in two segments of a circular loop of radius r in the direction shown in figure. The magnitude of magnetic field at the centre of the loop is

The magnetic field is an invisible space around a magnetic object. A magnetic field is basically used to describe the distribution of magnetic... View Article

Two drops of same radius are falling through aIRR with terminal velocity of 10 m/s. If these two drops coalesce, then terminal velocity of new drop will be

Terminal velocity is defined as the highest velocity that is attained by an object as it falls through a fluid. When the sum of drag force and... View Article

Two balls of equal mass undergo head-on collision while each was moving with a speed of 6 m/s. If the coefficient of restitution is 1/3, the speed of each ball after impact will be

A head-on collision happens when the velocities of both particles are along the line of collision. This can be regarded as a collision in one... View Article

A nearsighted man can clearly see objects up to a distance of 2m. Calculate the power of the lens of the spectacles necessary for the remedy of this defect.

Myopia or Nearsightedness occurs when the eye loses its ability to focus on far-off objects as the lenses do not possess a long focal length.... View Article

Current I is moving in a regular hexagon shaped loop of side length a. What is the magnetic field at the centre of hexagon?

The magnetic field is an invisible space around a magnetic object. A magnetic field is basically used to describe the distribution of magnetic... View Article

In the arrangement of resistances shown below. The effective resistance between points A and B is

n a complex circuit consisting of two or more resistors, the effective resistance is the measure of the total resistance of all the resistor... View Article

In an electrochemical process, a salt bridge is used to _______

In an electrochemical process, a salt bridge is used to maintain the charge balance in the two half cells Solution A salt bridge is a... View Article

The moment of a magnet (15cm×2cm×1cm) is 1.2Am₂. What is its intensity of magnetisation?

The electrons circulating around the nucleus have a magnetic moment. When the material is not magnetised the magnetic dipole moment sum up to... View Article

A galvanometer with resistance 100 Ω gives full scale deflection with a current of 10 mA. The value of shunt, in order to convert it into an ammeter of 10 ampere range, will be

A galvanometer is a device that is used to detect a small electric current or measure its magnitude. The current and its intensity is usually... View Article

A charge Q is placed at the centre of the line joining two point charges +q and +q as shown in figure. The ratio of charges Q and q is

For the equilibrium of charge Q, the force applied by both the charges i.e. another Q and q should be equal in magnitude... View Article

A dipole is placed parallel to the electric field. If W is the work done in rotating the dipole by 60, then the work done in rotating it by 180º is

A dipole is placed parallel to the electric field. If W is the work done in rotating the dipole by 60, then the work done in rotating it by... View Article

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