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प्रश्न
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उत्तर

To find a slope of a graph we take the following steps
a. Take two points P and Q on the line, at a distance more than half the length of the line. The points should be so chosen that the value of x and y should be easily read on the axes.
b. Draw horizontal and vertical lines from these points on the axes, and read the values of x, say x1, and the value of y, say y1 for the point P. Similarly, the values of x, say x2, and the value of y, say y2, for the point Q.
c. Calculate Δy = y2 - y1 and Δx = x1 - x2. Calculate the slope of the graph m = Δy/Δx
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संबंधित प्रश्न
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Complete the following: 1 nano second =……….s.
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ly
State or define the following term:
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Arrange the following in correct sequence.
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Cross word puzzle.

Clues – Across
- SI unit of temperature;
- A derived quantity;
- Mass per unit volume;
- Maximum volume of liquid a container can hold
Clues – Down
- A derived quantity
- SI unit of volume
- A liquid denser than iron
- A unit of length used to measure very long distances
Figure shows a measuring scale which is usually supplied with a geometry box. Which of the following distance cannot be measured with this scale by using it only once?

Questions based on Higher Order Thinking Skills:
There are three spheres A, B, C as shown below.
Sphere A and B are made of same material. Sphere C is made of a different material. Spheres A and C have equal radii. The radius of sphere B is half that of A. Density of A is double that of C.

Now answer the following questions.
- Find the ratio of masses of spheres A and B.
- Find the ratio of volumes of spheres A and B.
- Find the ratio of masses of spheres A and C.
