An elastic string of unstretched length and force constant is stretched by a small length . It is further stretched by another small length . The work done in the second stretching is
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A shell of mass moving with velocity suddenly breaks into 2 pieces. The part having mass remains stationary. The velocity of the other shell will be
A shell of mass moving with velocity suddenly breaks into 2 pieces. The part having mass remains stationary. The velocity of the other shell will be
If 
then B=
If then B=
(Me)2SiCl2 on hydrolysis will produce -
(Me)2SiCl2 on hydrolysis will produce -
The coefficient of 
in 
is
The coefficient of in is
The set S : = { 1, 2, 3 .........12} is to be partitioned into three sets A, B, C of equal size. Thus A 
B C = S, A 
B = B C = A C = 
. The number of ways to partition S is -
×
= 
The set S : = { 1, 2, 3 .........12} is to be partitioned into three sets A, B, C of equal size. Thus A B C = S, A B = B C = A C = . The number of ways to partition S is -
× = (Me)2SiCl2 on hydrolysis will produce -
Silicone
(Me)2SiCl2 on hydrolysis will produce -
Silicone
A one kilowatt motor is used to pump water from a well 10 m deep. The quantity of water pumped out per second is nearly
A one kilowatt motor is used to pump water from a well 10 m deep. The quantity of water pumped out per second is nearly
Assertion (A) : The Remainder obtained when the polynomial 
is divided by 
Is 1
Reason (R): If 
is divided by 
then the remainder is f(a)
Assertion (A) : The Remainder obtained when the polynomial is divided by Is 1
Reason (R): If is divided by then the remainder is f(a)
A ball hits the floor and rebounds after inelastic collision. In this case
By the conservation of momentum in the absence of external force total momentum of the system (ball + earth) remains constant
A ball hits the floor and rebounds after inelastic collision. In this case
By the conservation of momentum in the absence of external force total momentum of the system (ball + earth) remains constant
The coefficient of in 
is
The coefficient of in is
Statement I Two particles moving in the same direction do not lose all their energy in a completely inelastic collision.
Statement II Principle of conservation of momentum holds true for all kinds of collisions.
Statement I Two particles moving in the same direction do not lose all their energy in a completely inelastic collision.
Statement II Principle of conservation of momentum holds true for all kinds of collisions.
Statement I Two particles moving in the same direction do not lose all their energy in a completely inelastic collision.
Statement II Principle of conservation of momentum holds true for all kinds of collisions.
Statement I Two particles moving in the same direction do not lose all their energy in a completely inelastic collision.
Statement II Principle of conservation of momentum holds true for all kinds of collisions.
A mass M is lowered with the help of a string by a distance h at a constant acceleration g/2. The work done by the string will be
A mass M is lowered with the help of a string by a distance h at a constant acceleration g/2. The work done by the string will be
is