Maths-

General

Easy

Question

# defined by .

- a bijection
- an injection but not surjection
- a surjection but not an injection
- neither an injection nor a surjection

## The correct answer is: a bijection

### Related Questions to study

physics

### What does the speedometer measure kept in motorbike ?

### What does the speedometer measure kept in motorbike ?

physicsGeneral

physics-

### A cell is connected between the points A and C of a circular conductor ABCD with O as centre and angle If and are the magnitudes of the magnetic fields at O due to the currents in ABC and ADC respectively, then ratio is

### A cell is connected between the points A and C of a circular conductor ABCD with O as centre and angle If and are the magnitudes of the magnetic fields at O due to the currents in ABC and ADC respectively, then ratio is

physics-General

physics-

### Current is flowing in conductor shaped as shown in the figure. The radius of the curved part is and the length of straight portion is very large. The value of the magnetic field at the centre will be

### Current is flowing in conductor shaped as shown in the figure. The radius of the curved part is and the length of straight portion is very large. The value of the magnetic field at the centre will be

physics-General

physics

### A body is moving in x direction with constant acceleration a Find the difference of the displacement covered by it in nth second and (n-1) th second.

### A body is moving in x direction with constant acceleration a Find the difference of the displacement covered by it in nth second and (n-1) th second.

physicsGeneral

physics

### A body starts its motion with zero velocity and its acceleration is 3m/s^{2}. Find the distance travelled by it in fifth second.

### A body starts its motion with zero velocity and its acceleration is 3m/s^{2}. Find the distance travelled by it in fifth second.

physicsGeneral

physics-

### Two thick wires and two thin wires, all of same material and same length, form a square in three different ways P,Q and R as shown in the figure. With correct connections shown, the magnetic field due to the current flow, at the centre of the loop will be zero in case of

### Two thick wires and two thin wires, all of same material and same length, form a square in three different ways P,Q and R as shown in the figure. With correct connections shown, the magnetic field due to the current flow, at the centre of the loop will be zero in case of

physics-General

physics

### Given figure shows a graph at acceleration time for a rectilinear motion. Find average acceleration in first 10 seconds

### Given figure shows a graph at acceleration time for a rectilinear motion. Find average acceleration in first 10 seconds

physicsGeneral

physics

### The motion of a particle along a straight line is described by the function .X=(3T-2)^{2} Calculate the acceleration after 10 s.

### The motion of a particle along a straight line is described by the function .X=(3T-2)^{2} Calculate the acceleration after 10 s.

physicsGeneral

physics-

### A long insulated copper wire is closely wound as a spiral of N turns. The spiral has inner radius a and outer radius b. The spiral lies in the plane and a steady current flows through the wire. The Z-component of the magnetic field at the centre of the spiral is

900553 |

### A long insulated copper wire is closely wound as a spiral of N turns. The spiral has inner radius a and outer radius b. The spiral lies in the plane and a steady current flows through the wire. The Z-component of the magnetic field at the centre of the spiral is

900553 |

physics-General

biology

### In angiosperms, female gametophyte is represented by

### In angiosperms, female gametophyte is represented by

biologyGeneral

physics

### A particle is projected vertically upwards with velocity .30 ms^{-1} Find the ratio of average speed and instantaneous velocity after 6s.[g=10 ms^{-1} ]

### A particle is projected vertically upwards with velocity .30 ms^{-1} Find the ratio of average speed and instantaneous velocity after 6s.[g=10 ms^{-1} ]

physicsGeneral

Maths-

Maths-General

physics

### A particle moves 4 m in the south direction. Then it moves 3 m in the west direction. The time taken by the particle is 2 second. What is the ratio between average speed and average velocity

### A particle moves 4 m in the south direction. Then it moves 3 m in the west direction. The time taken by the particle is 2 second. What is the ratio between average speed and average velocity

physicsGeneral

physics-

### In the adjacent figure is shown a closed path A long straight conductor carrying a current passes through and perpendicular to the plane of the paper. Then which of the following holds good?

### In the adjacent figure is shown a closed path A long straight conductor carrying a current passes through and perpendicular to the plane of the paper. Then which of the following holds good?

physics-General

physics-

### A current I enters a circular coil of radius R, branches into two parts and then recombines as shown in the circuit diagram

The resultant magnetic field at the centre of the coil is

### A current I enters a circular coil of radius R, branches into two parts and then recombines as shown in the circuit diagram

The resultant magnetic field at the centre of the coil is

physics-General