Question
In a food chain, which trophic level has highest energy
level ?Solution
Explanation: According to the 10% energy transfer rule, the highest amount of energy is stored in producers (plants, algae, and phytoplankton) because they capture solar energy through photosynthesis. As energy moves up the trophic levels (herbivores → carnivores → top predators), it decreases.
If mass is doubled and velocity is tripled, how will kinetic energy change? Â
What will be the energy possessed by a stationary object of mass 10 kg placed at a height of 20 m above the ground? (Take g = 10 m/s^2)
A boy is standing in front of a plane mirror at a distance of 3 m from it. What is the distance between the boy and his image?
A soap bubble expands isothermally and its radius doubles. The work done by surface tension during this expansion is:Â
In a nuclear reaction, the product nucleus has higher binding energy per nucleon than the reactants. Which of the following is correct?
A sugar solution in a tube of length 2.0 dm produces optical rotation of 12°. Then, the sugar solution is diluted to one half of its initial concentra...
The point where the total mass of a body is considered to be concentrated is known as what?
A particle with charge q = 2 μC moves through a magnetic field B = 0.5 T with velocity v = 4 m/s at angle 60°. Find magnitude of magnetic force.
What is the total capacitance in the given circuit?
Two capacitors, 2 µF and 3 µF, are charged separately to 100 V and 50 V respectively, and then connected positive to positive, negative to negative. F...
