Answer
Correct Answer is C (10% of the plant's energy is transferred
Explanation:
Ecosystem
ecosystem is a community where large number of living organisms lives. These living organism are plants, trees, different types of animals, birds etc. These living organism depends on each other for their food.
Their are various levels in ecosystem like producer, primary consumer, secondary consumer and tertiary consumer.
producer like plants produce their food on their own. And primary consumers takes their food from producers.
According to 10% Rule of ecology only 10% energy is passed from one level to another.So 10% of the plant's energy is transferred
Answer:
When the platform rotates, the rotating mass will travel in a circular path due to the force exerted on it by the string (by way of the tension in the spring). Since it is not possible to have an instantaneous readout of this tension force while the platform is rotating, an indirect measurement of this force will be made using the weight of the static mass as shown and explained below.
Energy of wave depends on its amplitude and it is given as

here k = constant
A = amplitude
so energy will increase or decrease depends on the amplitude of the wave
So here if we need to check which wave has lower energy then we need to compare the amplitude.
If the amplitude is less then energy must be less
So please check in the figure that which wave out of A and B has lesser amplitude to find out the wave of lesser energy