Maths-
General
Easy
Question
If 
then x =
- 84
- 28
- 21
- 14
The correct answer is: 21
On squaring we get 
Þx = 21
Related Questions to study
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Faraday is the unit of
Faraday is the unit of
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In triangle 
, If 
then the triangle is
In triangle , If then the triangle is
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chemistry-
The correct order of acid strength of the following compounds is
I. Phenol
II. p-cresol
III. m-nitrophenol
IV. p-nitrophenol
The correct order of acid strength of the following compounds is
I. Phenol
II. p-cresol
III. m-nitrophenol
IV. p-nitrophenol
chemistry-General
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A block of mass m is kept in an elevator which starts moving downward with an acceleration 
as shown in figure. The block is observed by two observers A and B for a time interval 
.The observer B finds that the work done by gravity is
A block of mass m is kept in an elevator which starts moving downward with an acceleration as shown in figure. The block is observed by two observers A and B for a time interval .The observer B finds that the work done by gravity is
physics-General
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Two identical beads are attached to free ends of two identical springs of spring constant 
Initially both springs make an angle of 
at the fixed point N. Normal length of each spring is 2R. Where R is the radius of smooth ring over which bead is sliding. Ring is placed on vertical plane and beads are at symmetry with respect to vertical line as diameter Choose the correct statement
Two identical beads are attached to free ends of two identical springs of spring constant Initially both springs make an angle of at the fixed point N. Normal length of each spring is 2R. Where R is the radius of smooth ring over which bead is sliding. Ring is placed on vertical plane and beads are at symmetry with respect to vertical line as diameter Choose the correct statement
physics-General
physics-
Two identical beads are attached to free ends of two identical springs of spring constant Initially both springs make an angle of at the fixed point N. Normal length of each spring is 2R. Where R is the radius of smooth ring over which bead is sliding. Ring is placed on vertical plane and beads are at symmetry with respect to vertical line as diameter The speed of bead when spring is at normal length
Two identical beads are attached to free ends of two identical springs of spring constant Initially both springs make an angle of at the fixed point N. Normal length of each spring is 2R. Where R is the radius of smooth ring over which bead is sliding. Ring is placed on vertical plane and beads are at symmetry with respect to vertical line as diameter The speed of bead when spring is at normal length
physics-General
physics-
Two identical beads are attached to free ends of two identical springs of spring constant Initially both springs make an angle of at the fixed point N. Normal length of each spring is 2R. Where R is the radius of smooth ring over which bead is sliding. Ring is placed on vertical plane and beads are at symmetry with respect to vertical line as diameter Relative acceleration between two beads at the initial moment
Two identical beads are attached to free ends of two identical springs of spring constant Initially both springs make an angle of at the fixed point N. Normal length of each spring is 2R. Where R is the radius of smooth ring over which bead is sliding. Ring is placed on vertical plane and beads are at symmetry with respect to vertical line as diameter Relative acceleration between two beads at the initial moment
physics-General
physics-
Two identical beads are attached to free ends of two identical springs of spring constant Initially both springs make an angle of at the fixed point N. Normal length of each spring is 2R. Where R is the radius of smooth ring over which bead is sliding. Ring is placed on vertical plane and beads are at symmetry with respect to vertical line as diameter. Normal reaction on one of the bead at initial moment due to ring is
Two identical beads are attached to free ends of two identical springs of spring constant Initially both springs make an angle of at the fixed point N. Normal length of each spring is 2R. Where R is the radius of smooth ring over which bead is sliding. Ring is placed on vertical plane and beads are at symmetry with respect to vertical line as diameter. Normal reaction on one of the bead at initial moment due to ring is
physics-General
maths-
If sec4A = cosec(A – 
) where 4A is an acute angle, find the value of A
If sec4A = cosec(A – ) where 4A is an acute angle, find the value of A
maths-General
maths-
right angled a
right angled a
maths-General
chemistry-
The reaction, 
Is called
The reaction, Is called
chemistry-General
physics-
Statement - I One end of ideal massless spring is connected to fixed vertical wall and other end to a block of mass m initially at rest on smooth horizontal surface. The spring is initially in natural length. Now a horizontal force F acts on block as shown. Then the maximum extension in spring is equal to maximum compression in spring.
Statement - II To compress or to expand an ideal unstretched spring by equal amount, same work is to done on spring.
Statement - I One end of ideal massless spring is connected to fixed vertical wall and other end to a block of mass m initially at rest on smooth horizontal surface. The spring is initially in natural length. Now a horizontal force F acts on block as shown. Then the maximum extension in spring is equal to maximum compression in spring.
Statement - II To compress or to expand an ideal unstretched spring by equal amount, same work is to done on spring.
physics-General
physics-
A hollow vertical cylinder of radius r and height h has a smooth internal surface. A small particle is placed in contact with the inner side of the upper rim, at point A, and given a horizontal speed u, tangential to the rim. It leaves the lower rim at point B, vertically below A. If n is an integer, then–
A hollow vertical cylinder of radius r and height h has a smooth internal surface. A small particle is placed in contact with the inner side of the upper rim, at point A, and given a horizontal speed u, tangential to the rim. It leaves the lower rim at point B, vertically below A. If n is an integer, then–
physics-General
physics-
A machine, in an amusement park, consists of a cage of the end of one arm, hinged at O. The cage revolves along a vertical circle of radius r (ABCDEFGH) about its hinge O, at constant linear speed v= 
. The cage is so attached that the man of weight 'W' standing on a weighing machine, inside the cage, is always vertical. Then which of the following is correct
A machine, in an amusement park, consists of a cage of the end of one arm, hinged at O. The cage revolves along a vertical circle of radius r (ABCDEFGH) about its hinge O, at constant linear speed v= . The cage is so attached that the man of weight 'W' standing on a weighing machine, inside the cage, is always vertical. Then which of the following is correct
physics-General
physics-
Acceleration versus time graph of a particle moving in a straight line is as shown in adjoining figure. If initially particle was at rest then corresponding kinetic energy versus time graph will be:
Acceleration versus time graph of a particle moving in a straight line is as shown in adjoining figure. If initially particle was at rest then corresponding kinetic energy versus time graph will be:
physics-General
