Maths-
Period of 
is
Maths-General
Answer:The correct answer is:
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physics-
A particle starts from rest at 
and undergoes an acceleration a in 
with time 
in seconds which is as shown
Which one of the following plot represents velocity 
in 
versus time in seconds
Takingthe motion from
to 
Taking the motion from
to 
A particle starts from rest at and undergoes an acceleration a in with time in seconds which is as shown
Which one of the following plot represents velocity in versus time in seconds
physics-General
Takingthe motion from
to Taking the motion from
to maths-
Period of 
is
Period of is
maths-General
physics-
Two inclined planes are located as shown in figure. A particle is projected from the foot of one frictionless plane along its line with a velocity just sufficient to carry it to top after which the particle slides down the other frictionless inclined plane. The total time it will take to reach the point 
is
The time of ascent = time of descent 
total time of flight 
or
total time of flight or
Two inclined planes are located as shown in figure. A particle is projected from the foot of one frictionless plane along its line with a velocity just sufficient to carry it to top after which the particle slides down the other frictionless inclined plane. The total time it will take to reach the point is
physics-General
The time of ascent = time of descent
total time of flight
or
total time of flight or
physics-
characteristic of a copper wire of length 
and area of cross-section 
is shown in figure. The slope of the curve becomes
Slope of graph
If experiment is performed at higher temperature then resistance increase and hence slope decrease, choice (a) is wrong.
Similarly in choice (b) and (c) resistance increase.
But for choice (d) resistance R increases, so slope decreases
If experiment is performed at higher temperature then resistance increase and hence slope decrease, choice (a) is wrong.
Similarly in choice (b) and (c) resistance increase.
But for choice (d) resistance R increases, so slope decreases
characteristic of a copper wire of length and area of cross-section is shown in figure. The slope of the curve becomes
physics-General
Slope of graph
If experiment is performed at higher temperature then resistance increase and hence slope decrease, choice (a) is wrong.
Similarly in choice (b) and (c) resistance increase.
But for choice (d) resistance R increases, so slope decreases
If experiment is performed at higher temperature then resistance increase and hence slope decrease, choice (a) is wrong.
Similarly in choice (b) and (c) resistance increase.
But for choice (d) resistance R increases, so slope decreases
physics-
graph for a particle is as shown. The distance travelled in the first is
Distance covered 
Area enclosed by graph
Area of triangle 
Area enclosed by graph Area of triangle graph for a particle is as shown. The distance travelled in the first is
physics-General
Distance covered Area enclosed by graph
Area of triangle
Area enclosed by graph Area of triangle physics-
A particle starts from rest. Its acceleration 
versus time 
is as shown in the figure. The maximum speed of the particle will be
The area under acceleration time graph gives change in velocity. As acceleration is zero at the end of 
i.e.
Area of
i.e.
Area ofA particle starts from rest. Its acceleration versus time is as shown in the figure. The maximum speed of the particle will be
physics-General
The area under acceleration time graph gives change in velocity. As acceleration is zero at the end of
i.e.Area of
i.e.
Area ofphysics-
The time taken by a block of wood (initially at rest)to slide down a smooth inclined plane 
long (angle of inclination is 
) is
For one dimensional motion along a plane
The time taken by a block of wood (initially at rest)to slide down a smooth inclined plane long (angle of inclination is ) is
physics-General
For one dimensional motion along a plane
physics-
Consider a thin square sheet of side and thickness 
made of a material of resistivity 
The resistance between two opposite faces, shown by the shaded areas in the figure is
is independent of 
Hence the correct option is (c).
Consider a thin square sheet of side and thickness made of a material of resistivity The resistance between two opposite faces, shown by the shaded areas in the figure is
physics-General
is independent of Hence the correct option is (c).
physics-
The plot represents the flow of current through a wire at three different times.
The ratio of charges flowing through the wire at different times is
) 2 : 3 : 3
Therefore, charge is equal to area under the curve.
∴ Ist rectangle =q=lb=2
IInd rectangle =q=lb=2
Hence, ratio is 1:1:1.
Therefore, charge is equal to area under the curve.
∴ Ist rectangle =q=lb=2
IInd rectangle =q=lb=2
Hence, ratio is 1:1:1.
The plot represents the flow of current through a wire at three different times.
The ratio of charges flowing through the wire at different times is
physics-General
) 2 : 3 : 3
Therefore, charge is equal to area under the curve.
∴ Ist rectangle =q=lb=2
IInd rectangle =q=lb=2
Hence, ratio is 1:1:1.
Therefore, charge is equal to area under the curve.
∴ Ist rectangle =q=lb=2
IInd rectangle =q=lb=2
Hence, ratio is 1:1:1.
maths-
If 
, then the period of fis
If , then the period of fis
maths-General
physics-
Four concurrent coplanar forces in newton are acting at a point and keep it in equilibrium figure. Then values of 
and 
are
In equilibrium position along 
-direction
2 sin 60
or
or 
As
or 
Along
-direction, 
N
-direction2 sin 60
or
or As
or Along
-direction, NFour concurrent coplanar forces in newton are acting at a point and keep it in equilibrium figure. Then values of and are
physics-General
In equilibrium position along -direction
2 sin 60
or or
As
or
Along-direction,
N
-direction2 sin 60
or
or As
or Along
-direction, Nphysics-
The effective capacitance between points 
and 
shown in figure. Assuming 
F and that outer capacitors are all 
F is
The arrangement shows a Wheatstone bridge.
As
therefore the bridge is balanced.
Similarly,
effective capacitance
As
therefore the bridge is balanced.Similarly,
effective capacitanceThe effective capacitance between points and shown in figure. Assuming F and that outer capacitors are all F is
physics-General
The arrangement shows a Wheatstone bridge.
Astherefore the bridge is balanced.
Similarly,
effective capacitance
As
therefore the bridge is balanced.Similarly,
effective capacitancephysics-
The four capacitors, each of 25 
F are connected as shown in figure. The DC voltmeter reads 200 V. the change on each plate of capacitor is
Charge on each plate of each capacitor
The four capacitors, each of 25 F are connected as shown in figure. The DC voltmeter reads 200 V. the change on each plate of capacitor is
physics-General
Charge on each plate of each capacitor
physics-
For the circuit shown in figure the charge on 4F capacitor is
Combined capacity of 
and 
= 1 + 5=
Now,
and 
are in series.
Charge in the arm containingcapacitor is
and = 1 + 5=Now,
and are in series.Charge in the arm containing
capacitor isFor the circuit shown in figure the charge on 4F capacitor is
physics-General
Combined capacity of and = 1 + 5=
Now,and are in series.
Charge in the arm containingcapacitor is
and = 1 + 5=Now,
and are in series.Charge in the arm containing
capacitor isphysics-
Five equal resistances, each of resistance 
are connected as shown in figure below. A bettery of volt is connected between 
The current flowing in 
will be
Five equal resistances, each of resistance are connected as shown in figure below. A bettery of volt is connected between The current flowing in will be
physics-General