Question

plzzzzzzz guys answer the questions as fast as possible ​

Answer 1

Answer:

Question 6

1. INCREASED population

2.Increasing industries

3.Lack of water conservation techniques

4.Agriculture activities

Question 7

1. Reflection of light is Reflection is when light bounces off an object. If the surface is smooth and shiny, like glass, water or polished metal, the light will reflect at the same angle as it hit the surface. This is called specular reflection.

2. Concave mirrors can produce both real and virtual images; they can be upright (if virtual) or inverted (if real); they can be behind the mirror (if virtual) or in front of the mirror (if real); they can also be enlarged, reduced, or the same size as object.

3.It is necessary to check ISI mark on the electrical appliences because this marks indicates the product is. fully original which is provided by industrial product of India. =ISI STANDS FOR =>INDIAN STANDARD INSTITUTE.

4. Principal of an electric bell

An electric bell is a device in which to and fro movement of a smaller hammer on a gong produces the sound of a bell. It works on the principle of magnetic effect of current, i.e. electromagnetism. It is an important application of an electromagnet which is used in offices, houses, schools, alarm equipment etc.

Principal of an electric fuse

Electric fuse works on the heating effect of electric current. when electricity passes through the wires it creates heat. fuse is made up of a low melting point. due to the heat created by the electric current, if excess current passes through the fuse,the fuse melts down and prevents excess flow of electric current...

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