Fill the empty box choosing the right one from the following.
| Type of pyramid | Base |
| Pyramid of number | Number of organisms |
| ? | Amount of energy |
A) Geographical pyramid
B) Pyramid of energy
C) Pyramid of biomass
D) Giza pyramid
1 Answers
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All these are included in Right to Life i.e., Article 21 of the Indian Constitution. 1) Right to food 2) Right to employment
B) 1, 2 and 3
2 Answers 1 views
It is known that a box of 800 electric bulbs contains 36 defective bulbs . One bulb is taken at random of the box. What is the probability that the bu
Correct Answer - `(191)/(200) `
2 Answers 1 views
Consider a particle of mass \( m \) having linear momentum \( P \) at position \( r \) relative to the origin \( O \). Which of the following equations correctly relates \( r , P , L \) ? a) \( \left[\left(\frac{d L}{d t}\right)+r x\left(\frac{d P}{d t}\right)\right]=0 \) b) \( \left[\left(\frac{d L}{d t}\right)-r x\left(\frac{d P}{d t}\right)\right]=0 \) c) \( \left[\left(\frac{d L}{d t}\right) \times\left(\frac{d r}{d t}\right) \times P\right]=0 \) d) \( \left[\left(\frac{d L}{d t}\right)-\left(\frac{d r}{d t}\right) \times P\right]=0 \)
Correct answer is (b) We know that \(\tau\) = r × F ∵ \(\tau\) \(= \frac{dL}{dt},\) \(F = \frac{dP}{dt}\) \(\left(\frac{dL}{dt}\right) = r \times \left(\frac{dP}{dt}\right)\) \(\left(\frac{dL}{dt}\right) - r \times \left(\frac{dP}{dt}\right) = 0\)
2 Answers 1 views
Fill in the blanks with appropriate linking words choosing from the given in bracket
while, and, but, till.
2 Answers 1 views
Find out the missing thing from the table Type of pyramid
B) Flow of energy
2 Answers 1 views
Push a heavy box with a small force. It does not move. Now gradually increase the force, the box till does not move.
A) force increases, friction increases
2 Answers 2 views
One litre of water can fill in cylinder A and two litres of water can fill in cylinder B. Then two litres of gas can fill in
C) both ‘A’ and ‘B’
2 Answers 1 views
A tank has two inlet pipes, A and B, which can fill the tank in 12 hours and 18 hours respectively, and an outlet C which can empty the tank in 9 hour
Correct Answer - 12 hours
2 Answers 1 views
A tap can fill a tank in 48 minutes whereas another tap can empty it in 2 hours. If both the taps are opened at 11:40 A.M, then the tank will be fille
Correct Answer - C Consider, the filling of tank as a positive work and emptying the tank as negative work.
2 Answers 3 views
Explain with the help of two examples, how the pyramid of number and the pyramid of biomass can look inverted.
The pyramid of biomass in sea is generally inverted because the biomass of fishes far exceeds that of phytoplankton and the number of big fishes eating the small fishes is...
2 Answers 1 views