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How mirror can be identified by observing the values of the magnification?

How mirror can be identified by observing the values of the magnification? If an object is placed within the focal length of a mirror, the image of the object will get magnified in case of a concave mirror, and will get diminished in case of a convex mirror. The value of magnification will be greater than 1 in case of a concave mirror, and less than 1 in case of a convex mirror.

How can you understand that a slide callipers has an instrumental error?

How can you understand those slide calipers has an instrumental error?

Kinetic theory of molecules is based upon these postulates:

  • Any substance is made of numerous small particles. These are known as molecules.

  • Molecules are so small that they are considered point-like.

  • The particles are always moving.

  • In the case of gases, the molecules remain very distantly, so it can be said that they do not feel any attractive or repulsive force. In the case of liquid, though they remain away from each other, they face the shape of the container. For solid objects, they remain close as they face a strong attraction force, and thus they have their own shape and size.

  • For gases and liquids, the particles move randomly as they collide with each other and the wall of the container.

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