Construct an ideal pyramid of energy when 1,000,000 joules of sunlight is available. Label all its trophic levels.

Construct a pyramid of biomass starting with phytoplankton. Label its three trophic levels. Is the pyramid upright or inverted? Justify your answer.

Approximately what amount of energy is available to one trophic level from one trophic level lower to it?

These questions consist of two statements each printed as Assertoin and Reason. While answering these questions, you are requied to choose any one of the following four responses. If both Assertion and Reason are true and Reason is correct explanation of Assertion If both Assertion and REason are true but Reason is not correct explanation of Assertion If Assertion is true but Reason is false If both Assertion and Reason are false Assertion: Energy pyramid is slopping. REason: The energy of one trophic level is lower than the preceding trophic level.

The kinetic energy of an object of mass 'm' moving with a velocity of 5ms^-1 is 25 J. What will be its kinetic energy when its velocity is doubled ? What will be its kinetic energy when its velocity is increased to three times.

What would happen to the successive trophic levels in the pyramid of energy if the rate of reproduction of phytoplanks was slowed down? Suggest two factors, which could cause such a reduction in phytoplankton reproduction?

A solenoid is 2.0 m long and 3.0 cm in diamter. It has 5 layers of winding of 1,000 turns each an carries a current of 5.0 A. What is the agnetic field at its centre. ? Use the standard value of mu_0

In Young's double slit experiment,ligth of wavelnegth 6,000 overset @A is used to get an interference pattern on a screen.The fringe width changes by 1.5 mm,when the screen is brougnt towards the double slit by 50 cm.Find the distance between the two slits.

Two bodies of masses 1 kg and 3 kg respectively are connected rigidly by a vertical spring. The body of mass 3 kg rests on a smooth horizontal surface. The force constant of the spring is 484Nm^(-1) . From the equilibrium position, the mass of 1 kg is displaced vertically through a distance of 0.02 m and then released. calculate (i) and frequency of oscillation of the mass of 1 kg (ii) the maximum velocity of this mass (iii) its oscillation energy and (iv) the reaction of the table on the mass of 3 kg, when mass 1 kg is having harmonic oscillations.