Maths-
General
Easy
Question
The value of k for which the lines 
and 
are perpendicular is
- 3
- -1
- 2
- -2
The correct answer is: 2
Related Questions to study
maths-
If the straight lines x=1+s,y=-3-λs,z=1+λs and 
, z=2-t, with parameters s and t respectively, are co planar, then λ=
If the straight lines x=1+s,y=-3-λs,z=1+λs and , z=2-t, with parameters s and t respectively, are co planar, then λ=
maths-General
maths-
If 5 cas 
If 5 cas
maths-General
physics-
A boy begins to walk eastward along a street infront of his house and the graph of his displacement from home is shown in the following figure. His average speed for in the whole-time interval is equal to
A boy begins to walk eastward along a street infront of his house and the graph of his displacement from home is shown in the following figure. His average speed for in the whole-time interval is equal to
physics-General
maths-
The values of 
satisfying 
and 
are
The values of satisfying and are
maths-General
physics-
A body of mass 
is resting on a wedge of angle as shown in figure. The wedge is given at acceleration 
. What is the value of a son that the mass just falls freely?
The horizontal acceleration 
of the wedge should be such that in time the wedge moves the horizontal distance 
. The body must fall through a vertical distance 
under gravity. Hence,
and 
tan
or 
of the wedge should be such that in time the wedge moves the horizontal distance . The body must fall through a vertical distance under gravity. Hence, and tan
or A body of mass is resting on a wedge of angle as shown in figure. The wedge is given at acceleration . What is the value of a son that the mass just falls freely?
physics-General
The horizontal acceleration of the wedge should be such that in time the wedge moves the horizontal distance . The body must fall through a vertical distance under gravity. Hence,
and
tanor
of the wedge should be such that in time the wedge moves the horizontal distance . The body must fall through a vertical distance under gravity. Hence, and tan
or physics-
A cyclist starts from the centre 
of a circular park of radius one kilometre, reaches the edge 
of the park, then cycles along the circumference and returns to the centre along 
as shown in figure. If the round trip takes ten minutes, the net displacement and average speed of the cyclist (in metre and kilometre per hour) is
Net displacement 
and total distance 
Average speed
and total distance Average speed
A cyclist starts from the centre of a circular park of radius one kilometre, reaches the edge of the park, then cycles along the circumference and returns to the centre along as shown in figure. If the round trip takes ten minutes, the net displacement and average speed of the cyclist (in metre and kilometre per hour) is
physics-General
Net displacement and total distance
Average speed
and total distance Average speed
physics-
A ball is thrown vertically upwards. Which of the following graph/graphs represent velocity-time graph of the ball during its flight (air resistance is neglected)
In the positive region the velocity decreases linearly (during rise) and in the negative region velocity increases linearly (during fall) and the direction is opposite to each other during rise and fall, hence fall is shown in the negative region
A ball is thrown vertically upwards. Which of the following graph/graphs represent velocity-time graph of the ball during its flight (air resistance is neglected)
physics-General
In the positive region the velocity decreases linearly (during rise) and in the negative region velocity increases linearly (during fall) and the direction is opposite to each other during rise and fall, hence fall is shown in the negative region
physics-
Which of the following graphs cannot possibly represent one dimensional motion of a particle
I is not possible because total distance covered by a particle increases with time
II is not possible because at a particular time, position cannot have two values
III is not possible because at a particular time, velocity cannot have two values
IV is not possible because speed can never be negative
II is not possible because at a particular time, position cannot have two values
III is not possible because at a particular time, velocity cannot have two values
IV is not possible because speed can never be negative
Which of the following graphs cannot possibly represent one dimensional motion of a particle
physics-General
I is not possible because total distance covered by a particle increases with time
II is not possible because at a particular time, position cannot have two values
III is not possible because at a particular time, velocity cannot have two values
IV is not possible because speed can never be negative
II is not possible because at a particular time, position cannot have two values
III is not possible because at a particular time, velocity cannot have two values
IV is not possible because speed can never be negative
physics-
Which of the following graphs cannot possibly represent one dimensional motion of a particle
I is not possible because total distance covered by a particle increases with time
II is not possible because at a particular time, position cannot have two values
III is not possible because at a particular time, velocity cannot have two values
IV is not possible because speed can never be negative
II is not possible because at a particular time, position cannot have two values
III is not possible because at a particular time, velocity cannot have two values
IV is not possible because speed can never be negative
Which of the following graphs cannot possibly represent one dimensional motion of a particle
physics-General
I is not possible because total distance covered by a particle increases with time
II is not possible because at a particular time, position cannot have two values
III is not possible because at a particular time, velocity cannot have two values
IV is not possible because speed can never be negative
II is not possible because at a particular time, position cannot have two values
III is not possible because at a particular time, velocity cannot have two values
IV is not possible because speed can never be negative
maths-
The solution of 
is
The solution of is
maths-General
maths-
If 
If
maths-General
Physics-
A ball is thrown vertically upwards. Which of the following graph/graphs represent velocity-time graph of the ball during its flight (air resistance is neglected)?
In the positive region the velocity decreases linearly (during rise) and in the negative region velocity increases linearly (during fall) and the direction is opposite to each other during rise and fall, hence fall is shown in the negative region
A ball is thrown vertically upwards. Which of the following graph/graphs represent velocity-time graph of the ball during its flight (air resistance is neglected)?
Physics-General
In the positive region the velocity decreases linearly (during rise) and in the negative region velocity increases linearly (during fall) and the direction is opposite to each other during rise and fall, hence fall is shown in the negative region
physics-
Acceleration velocity graph of a particle moving in a straight line is as shown in figure. The slope of velocity-displacement graph
From acceleration-velocity graph, we have 
where 
is a constant which represents the slope of the given line.
As,
so 
or
constant
Thus, the slope of velocity-displacement graphs is same as that of acceleration velocity. Which is constant.
where is a constant which represents the slope of the given line.As,
so or
constantThus, the slope of velocity-displacement graphs is same as that of acceleration velocity. Which is constant.
Acceleration velocity graph of a particle moving in a straight line is as shown in figure. The slope of velocity-displacement graph
physics-General
From acceleration-velocity graph, we have where is a constant which represents the slope of the given line.
As, so
or constant
Thus, the slope of velocity-displacement graphs is same as that of acceleration velocity. Which is constant.
where is a constant which represents the slope of the given line.As,
so or
constantThus, the slope of velocity-displacement graphs is same as that of acceleration velocity. Which is constant.
Physics-
A cyclist starts from the centre of a circular park of radius one kilometre, reaches the edge of the park, then cycles along the circumference and returns to the centre along as shown in figure. If the round trip takes ten minutes, the net displacement and average speed of the cyclist (in metre and kilometre per hour) is
Net displacement and total distance
Average speed
and total distance Average speed
A cyclist starts from the centre of a circular park of radius one kilometre, reaches the edge of the park, then cycles along the circumference and returns to the centre along as shown in figure. If the round trip takes ten minutes, the net displacement and average speed of the cyclist (in metre and kilometre per hour) is
Physics-General
Net displacement and total distance
Average speed
and total distance Average speed
maths-
If 
then solutions of are in -
If then solutions of are in -
maths-General
