Maths
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Easy
Question
The area bounded by , Yaxis and the line y=e is
 2
 e

 1
The correct answer is: 1
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If then the general value of 'α ' is
If then the general value of 'α ' is
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The parabolas divide the square region bounded by the lines x=4, y=4 and the coordinate axes. If are respectively the areas of these parts numbered from top to bottom then is
The parabolas divide the square region bounded by the lines x=4, y=4 and the coordinate axes. If are respectively the areas of these parts numbered from top to bottom then is
mathsGeneral
physics
The figure shows a double slit experiment P and Q are the slits. The path lengths PX and QX are and respectively, where n is a whole number and is the wavelength. Taking the central fringe as zero, what is formed at X
For brightness, path difference
So second is bright.
So second is bright.
The figure shows a double slit experiment P and Q are the slits. The path lengths PX and QX are and respectively, where n is a whole number and is the wavelength. Taking the central fringe as zero, what is formed at X
physicsGeneral
For brightness, path difference
So second is bright.
So second is bright.
maths
If then = 
If then = 
mathsGeneral
physics
A particle starts from rest. Its acceleration time is as shown in the figure. The maximum speed of the particle will be
Area under accelerationtime graph gives the change in velocity. Hence,
Therefore, the correct option is [b].
Therefore, the correct option is [b].
A particle starts from rest. Its acceleration time is as shown in the figure. The maximum speed of the particle will be
physicsGeneral
Area under accelerationtime graph gives the change in velocity. Hence,
Therefore, the correct option is [b].
Therefore, the correct option is [b].
physics
In figure, one car at rest and velocity of the light from head light is , tehn velocity of light from head light for the moving car at velocity , would be
Since (negligible)
In figure, one car at rest and velocity of the light from head light is , tehn velocity of light from head light for the moving car at velocity , would be
physicsGeneral
Since (negligible)
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If α and β are two different solutions lying between and of the equation then Tan α + Tan β is
If α and β are two different solutions lying between and of the equation then Tan α + Tan β is
mathsGeneral
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A particle of mass is initially situated at the point inside a hemispherical surface of radius as shown in figure. A horizontal acceleration of magnitudeis suddenly produced on the particle in the horizontal direction. If gravitational acceleration is neglected, the time taken by particle to touch the sphere again is
Let the particle touches the sphere t the point
Let
In
or
Let
In
or
A particle of mass is initially situated at the point inside a hemispherical surface of radius as shown in figure. A horizontal acceleration of magnitudeis suddenly produced on the particle in the horizontal direction. If gravitational acceleration is neglected, the time taken by particle to touch the sphere again is
physicsGeneral
Let the particle touches the sphere t the point
Let
In
or
Let
In
or
physics
A cyclist starts from the centre of a circular park of radius 1 km, reaches the edge of the park, then cycles along the circumference and returns to the point as shown in figure. If the round trip takes 10 min, the net displacement and average speed of the cyclist (in metre and kilometer per hour) are
Since, the initial position of cyclist coincides with final position, so his net displacement is zero.
A cyclist starts from the centre of a circular park of radius 1 km, reaches the edge of the park, then cycles along the circumference and returns to the point as shown in figure. If the round trip takes 10 min, the net displacement and average speed of the cyclist (in metre and kilometer per hour) are
physicsGeneral
Since, the initial position of cyclist coincides with final position, so his net displacement is zero.
physics
A the instant a motor bike starts from rest in a given direction, a car overtakes the motor bike, both moving in the same direction. The speedtime graphs for motor bike and car are represented by and respectively Then
Distance travelled by motor bike at s
(18)(60)=540 m
Distance travelled by car at s
=(18)(60)=720 m
Therefore, separation between them at s is 180m. Let, separation between them decreases to zero at time beyond 18s.
Hence, and
s beyond 18s or
Hence, s=27s from start and distant travelled by both is =m
(18)(60)=540 m
Distance travelled by car at s
=(18)(60)=720 m
Therefore, separation between them at s is 180m. Let, separation between them decreases to zero at time beyond 18s.
Hence, and
s beyond 18s or
Hence, s=27s from start and distant travelled by both is =m
A the instant a motor bike starts from rest in a given direction, a car overtakes the motor bike, both moving in the same direction. The speedtime graphs for motor bike and car are represented by and respectively Then
physicsGeneral
Distance travelled by motor bike at s
(18)(60)=540 m
Distance travelled by car at s
=(18)(60)=720 m
Therefore, separation between them at s is 180m. Let, separation between them decreases to zero at time beyond 18s.
Hence, and
s beyond 18s or
Hence, s=27s from start and distant travelled by both is =m
(18)(60)=540 m
Distance travelled by car at s
=(18)(60)=720 m
Therefore, separation between them at s is 180m. Let, separation between them decreases to zero at time beyond 18s.
Hence, and
s beyond 18s or
Hence, s=27s from start and distant travelled by both is =m
physics
Assertion : Owls can move freely during night.
Reason : They have large number of rods on their retina.
Owls can move freely during night, because they have large number of cones on their retina which help them to see in night.
Assertion : Owls can move freely during night.
Reason : They have large number of rods on their retina.
physicsGeneral
Owls can move freely during night, because they have large number of cones on their retina which help them to see in night.
physics
A particle shows distancetime curve as given in this figure. The maximum instantaneous velocity of the particle is around the point
Instantaneous velocity is given by the slope of the curve at that instant from the figure it is clear that slope of the curve is maximum at point ‘’
A particle shows distancetime curve as given in this figure. The maximum instantaneous velocity of the particle is around the point
physicsGeneral
Instantaneous velocity is given by the slope of the curve at that instant from the figure it is clear that slope of the curve is maximum at point ‘’
Maths
The area bounded by y=3x and is
The area bounded by y=3x and is
MathsGeneral
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The area bounded by X axis, x=1 and x=2 is
The area bounded by X axis, x=1 and x=2 is
MathsGeneral
maths
If then =
If then =
mathsGeneral