The most unlikely representation of resonance structures of nitrophenoxide ion is

 is stronger acid than  because:

In the figure, area and Find area of

In the given figure, area (parallelogram ABCD) = 48 and Find area of

Hence option C is correct

In the given figure ABC is right angled at B in which BC = 15 cm, and CA = 17 cm Find the area of acute-angled triangle DBC, it being given that

Two rods P and Q have equal lengths. Their thermal conductivities are K₁ and K₂ and cross sectional areas are A₁ and A₂. When the temperature at ends of each rod are T₁ and T₂ respectively, the rate of flow of heat through P and Q will be equal, if

The graph shows the variation of temperature of one of a material with the heat supplied to it. At the substance is in the solid state. From the graph, we can conclude that

In the adjoining figure, AP and BP are angle bisector of and which meets at P on the parallelogram ABCD. Then =

Hence option 1 is correct

A block of mass m is attached with a massless spring of force constant k. The block is placed over a rough inclined surface for which the coefficient of friction is . The minimum value of M required to move the block up the plane is:(Neglect mass of string and pulley and friction in pulley)

In the figure, a block slides along a track from one level to a higher level, by moving through an intermediate valley. The track is frictionless untill the block reaches the higher level. There a frictional force stops the block in a distance d. The block's initial speed the height difference h is 1.1 m and the coefficient of kinetic friction is 0.6. The value of d is

A ball rolls down an inclined plane figure. The ball is first released from rest from P and then later from Q. Which of the following statement is/are correct?

A wedge of mass M fitted with a spring of stiffness 'k' is kept on a smooth horizontal surface. A rod of mass m is kept on the wedge as shown in the figure. System is in equilibrium. Assuming that all surfaces are smooth, the potential energy stored in the spring is:

A particle 'A' of mass kg is moving in the positive x–direction. Its initial position is x = 0 & initial velocity is 1 . The velocity at is:(use the graph given)

The perimeter of a right triangle is 132 cm. and the sum of the squares of its sides is 6050 cm². What is the sum of the perpendicular sides –

Hence Choice 1 is correct

In figure, triangle ABC is right-angled at B. Given that AB = 9 cm, AC = 15 cm, calculate the length of BC

For such questions, we should know the Pythagoras theorem of a triangle.

In DABC, AD is the median through A and E is the produced meets in F figure. Then the value of AF is equal to

Hence AF=(1/3)AC