Maths-
If
defined by 
Maths-General
- not one-one
- not onto
- not one-one but onto
- one-one but not onto
Answer:The correct answer is: not one-one but onto
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maths-
The number of ways one can arrange words with the letters of the word ’ so that ↑MADHURI↑ always vowels occupy the beginning, middle and end places is
3 vowels, 3 places
! remaining
!
Total
! 4!
Total
The number of ways one can arrange words with the letters of the word ’ so that ↑MADHURI↑ always vowels occupy the beginning, middle and end places is
maths-General
3 vowels, 3 places
! remaining
!
Total
! 4!
Total
physics
An ant goes from P to Q on a circular path in 20 second Radius OP=10 m . What is the average speed and average velocity of it ?

An ant goes from P to Q on a circular path in 20 second Radius OP=10 m . What is the average speed and average velocity of it ?

physicsGeneral
maths-
Which of the following functions is not injective?
Which of the following functions is not injective?
maths-General
maths-
The number of one one onto functions that can be defined from A={a,b,c,d} into B={1,2,3,4} is
The number of one one onto functions that can be defined from A={a,b,c,d} into B={1,2,3,4} is
maths-General
physics-
The variation of intensity of magnetization
with respect to the magnetizing field (H) in a diamagnetic substance is described by the graph in figure.

For a dia-magnetic substance,
is negative and
Therefore, the variation is represented by
. As magnetisation is small,
is better choice.
The variation of intensity of magnetization
with respect to the magnetizing field (H) in a diamagnetic substance is described by the graph in figure.

physics-General
For a dia-magnetic substance,
is negative and
Therefore, the variation is represented by
. As magnetisation is small,
is better choice.
physics-
A wire of length Land radius
rigidly fixed at one end. On stretching the other end of the wire with a force F, the increase in its length is
If another wire of same material but of length 2L and radius
is stretched with a force 2F, the increase in its length will be
Young’s modulus 

Since for same material Young’s modulus is same,

or
or
Since for same material Young’s modulus is same,
or
or
A wire of length Land radius
rigidly fixed at one end. On stretching the other end of the wire with a force F, the increase in its length is
If another wire of same material but of length 2L and radius
is stretched with a force 2F, the increase in its length will be
physics-General
Young’s modulus 

Since for same material Young’s modulus is same,

or
or
Since for same material Young’s modulus is same,
or
or
physics-
The diagram shows a force-extension graph for a rubber band. Consider the following statements
I. It will be easier to compress this rubber than expand it
II. Rubber does not return to its original length after it is stretched
III. The rubber band will get heated if it is stretched and released
Which of these can be deduced from the graph

Area of hysterisis loop gives the energy loss in the process of stretching and unstretching of rubber band and this loss will appear in the form of heating
The diagram shows a force-extension graph for a rubber band. Consider the following statements
I. It will be easier to compress this rubber than expand it
II. Rubber does not return to its original length after it is stretched
III. The rubber band will get heated if it is stretched and released
Which of these can be deduced from the graph

physics-General
Area of hysterisis loop gives the energy loss in the process of stretching and unstretching of rubber band and this loss will appear in the form of heating
physics-
A wire
has length 1 m and cross-sectional area 1
The work required to increase the length by 2 mm is
Work done = 

= 4
= 4
A wire
has length 1 m and cross-sectional area 1
The work required to increase the length by 2 mm is
physics-General
Work done = 

= 4
= 4
physics
The graph of position
time shown in the figure for a particle is not possible because ....

The graph of position
time shown in the figure for a particle is not possible because ....

physicsGeneral
physics-
The pressure applied from all directions on a cube is
. How much its temperature should be raised to maintain the original volume? The volume elasticity of the cube is
and the coefficient of volume expansion is 
If coefficient of volume expansion is
and rise in temperature is
then 
Volume elasticity
Volume elasticity
The pressure applied from all directions on a cube is
. How much its temperature should be raised to maintain the original volume? The volume elasticity of the cube is
and the coefficient of volume expansion is 
physics-General
If coefficient of volume expansion is
and rise in temperature is
then 
Volume elasticity
Volume elasticity
physics-
Curie-Weiss law is obeyed by iron
Iron is a ferromagnetic substance and ferromagnetic substance obeys Curie-Weiss law above its Curie temperature.
Curie-Weiss law is obeyed by iron
physics-General
Iron is a ferromagnetic substance and ferromagnetic substance obeys Curie-Weiss law above its Curie temperature.
physics-
If the
curves of two samples of P and Q of iron are as shown below, then which one of the following statements is correct?

For permanent magnet we prefer a material with high retentivity (so as to make a stronger magnet) and high coercivity (so that magnetization may not be wiped out easily). For electromagnet we prefer high saturated magnetism, low coercivity and least possible area of hysteresis loop so that electromagnet develops high magnetization, is easily demagnetized and energy loss in a magnetization cycle is least. Therefore, Pis suitable for making permanent magnet and Q for making electromagnet.
If the
curves of two samples of P and Q of iron are as shown below, then which one of the following statements is correct?

physics-General
For permanent magnet we prefer a material with high retentivity (so as to make a stronger magnet) and high coercivity (so that magnetization may not be wiped out easily). For electromagnet we prefer high saturated magnetism, low coercivity and least possible area of hysteresis loop so that electromagnet develops high magnetization, is easily demagnetized and energy loss in a magnetization cycle is least. Therefore, Pis suitable for making permanent magnet and Q for making electromagnet.
physics-
Among the following properties describing diamagnetism identify the property that is wrongly stated
Diamagnetic materials have negative susceptibility. Thus, (c) is wrongly stated.
Among the following properties describing diamagnetism identify the property that is wrongly stated
physics-General
Diamagnetic materials have negative susceptibility. Thus, (c) is wrongly stated.
physics-
Permanent magnet has properties retentivity and coercivity respectively
The materials for a permanent magnet should have high retentivity (so that the magnet is strong) and high coercivity (so that the magnetism is not wiped out by stray magnetic fields). As the material in this case is never put to cyclic changes of magnetization, hence hysteresis is immaterial.
Permanent magnet has properties retentivity and coercivity respectively
physics-General
The materials for a permanent magnet should have high retentivity (so that the magnet is strong) and high coercivity (so that the magnetism is not wiped out by stray magnetic fields). As the material in this case is never put to cyclic changes of magnetization, hence hysteresis is immaterial.
physics-
The magnetic susceptibility of a paramagnetic substance at
C is 0.0060, then its value at
C will be
Or
The magnetic susceptibility of a paramagnetic substance at
C is 0.0060, then its value at
C will be
physics-General
Or