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The Tyndall effect is the scattering of light as a light beam passes through a colloid. The individual suspension particles scatter and reflect light, making the beam visible. The amount of scattering depends on the frequency of the light and density of the particles. As with Rayleigh scattering, blue light is scattered more strongly than red light by the Tyndall effect. Another way to look at it is that longer wavelength light is transmitted, while shorter wavelength light is reflected by scattering. The size of the particles is what distinguishes a colloid from a true solution. For a mixture to be a colloid, the particles must be in the range of 1-1000 nanometers in diameter. The Tyndall effect was first described by 19th-century physicist John Tyndall.

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Find tow equivalent ratios of (b)4:3

Posted by Sanjog Agrawal 6 years, 1 month ago

CBSE > Class 07 > Mathematics

4 answers

Naman Ahden 6 years, 1 month ago

8:6 and 12:9

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Arya Anupam 6 years, 1 month ago

8/6 and 12/9. THANKS.

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Sanjog Agrawal 6 years, 1 month ago

4*2/3*2=8/12 3*3/4*3=9/12

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Sanjog Agrawal 6 years, 1 month ago

4*2/3*2=8/12 4*3/3*3=12/9

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The first second and fourth terms of a proportion are 6,18 and 24 respectively.find the third term

Posted by Sanjog Agrawal 6 years, 1 month ago

CBSE > Class 07 > Mathematics

4 answers

Naman Ahden 6 years, 1 month ago

6:18::x:24 Product of extremes: 144 means: 18x 18x=144 x=144÷18 =8(Ans)

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Arya Anupam 6 years, 1 month ago

First term*fourth term= second term*third term. So, third term=first term*fourth term/second term. First term=6, Second term=18, third term=x Fourth term =24. So,x=6*24/18=8. Therefore, third term is 8. THANK YOU.

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Arya Anupam 6 years, 1 month ago

Yes, your answer is correct.

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Sanjog Agrawal 6 years, 1 month ago

6*24=x*18 6*24=x X=8

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How to make poster on book fair

Posted by Gourav Choudhary 6 years, 1 month ago

CBSE > Class 07 > English

0 answers

ANSWER

Find tow equivalent ratios of (a)6:15

Posted by Sanjog Agrawal 6 years, 1 month ago

CBSE > Class 07 > Mathematics

3 answers

Naman Ahden 6 years, 1 month ago

12:30 , 18:45

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Arya Anupam 6 years, 1 month ago

Your answer is correct. Answer is 12/30 and 18/45. Thanks.

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Sanjog Agrawal 6 years, 1 month ago

6*2/15*2=12/30 6*3/15*3=18/45

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characteristics of animal of polar region,tropical rainforest?

Posted by Soham Adap 6 years, 1 month ago

CBSE > Class 07 > Science

1 answers

Jon Michel 6 years, 1 month ago

Animals in the polar region are adapted to the extremely cold climate by having some special characteristics such as white fur, strong sense of smell, a layer of fat under the skin, wide and large paws for swimming and walking, etc.

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ANSWER

The meaning of the chapter rahim ke dohe

Posted by Bhaskar Phukan 6 years, 1 month ago

CBSE > Class 07 > हिंदी

2 answers

Prabhawati Kanthipudi 6 years, 1 month ago

fyrjfdud gudygf jrud

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Prabhawati Kanthipudi 6 years, 1 month ago

rhdhdjsjbgb ehcgr fhcb

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What do temple towns represent

Posted by Aman Tiwari 6 years, 1 month ago

CBSE > Class 07 > Social Science

1 answers

Aman Tiwari 6 years, 1 month ago

Temple towns are represent a very impertant pattern of urbanisation the process by which cities developed

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Amoeba do movement for what

Posted by Kamaljit Kaur 6 years, 1 month ago

CBSE > Class 07 > Science

2 answers

Jon Michel 6 years, 1 month ago

"This single-celled amoeba crawls around by using actin polymerization to push out pseudopods, or false feet, to explore new territory. At the same time, organelles move in complex patterns within the cell.

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Arvind Kumae 6 years, 1 month ago

Amoeba constantly changes its shape and position.It pushes out one

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28÷3

Posted by Bhakti Gupta 6 years, 1 month ago

CBSE > Class 07 > Mathematics

3 answers

Arya Anupam 6 years, 1 month ago

9.33

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Khushi Gupta 6 years, 1 month ago

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Bhakti Gupta 6 years, 1 month ago

Ject4g

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4 ( 2 - x ) = 8

Posted by Tessa Antony 6 years, 1 month ago

CBSE > Class 07 > Mathematics

3 answers

Soham Adap 6 years, 1 month ago

4 multiply by 2 equals to 8 minuse x =8

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Soham Adap 6 years, 1 month ago

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Khushi Gupta 6 years, 1 month ago

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Find the product of 4×(-2)×(-3)?

Posted by Aruna Ganga Atla 6 years, 1 month ago

CBSE > Class 07 > Mathematics

3 answers

Naman Ahden 6 years, 1 month ago

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Naman Ahden 6 years, 1 month ago

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Dipti Pradhan 6 years, 1 month ago

4×(-2)×(-3)? 4×(-2)×(-3)=-8×(-3)=24

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Name two major political party in india?

Posted by Dipti Pradhan 6 years, 1 month ago

CBSE > Class 07 > Social Science

1 answers

Dipti Pradhan 6 years, 1 month ago

The two major political party in india is - (1)Rulling party. (2)opposition party.

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Tick the correct answer in Cockroaches real enters the body through options lungs girls prickles skin

Posted by Aleemuddin Shaikh 6 years, 1 month ago

CBSE > Class 07 > Science

3 answers

Jon Michel 6 years, 1 month ago

Spiracles

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Avika Mathur 6 years, 1 month ago

Spiracles

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Soham Adap 6 years, 1 month ago

yes

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Why rusting of iron objects is faster in coastal areas than in deserts.

Posted by Pooja Kisor 6 years, 1 month ago

CBSE > Class 07 > Science

2 answers

Abhi Gupta 6 years, 1 month ago

Because in air of costal area contain humidity and in desert not .

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Jon Michel 6 years, 1 month ago

Rusting of iron occurs only if iron comes in contact with moist air. In coastal areas, air contains high percentage of moisture because of sea or ocean, while in deserts air is dry and hot. As the percentage of moisture in air is more in coastal area compared to desert, rusting becomes faster.

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Raju's age is three more than four times of his father's age .His father's age is 30 .What is Raju's age ?

Posted by Tessa Antony 6 years, 1 month ago

CBSE > Class 07 > Mathematics

2 answers

Khushi Gupta 6 years, 1 month ago

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Mir Salman Kaif Ali 6 years, 1 month ago

123

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What are naturally and nagarams

Posted by Tanvi Waghmare 6 years, 1 month ago

CBSE > Class 07 > Social Science

1 answers

Yogita Ingle 6 years, 1 month ago

During 8th to 9th centuries, nagaram was considered as towns where merchants had conducted commercial activities by means of corporate body known as nagarattar.

Nagarams under the Chola kingdom were usually considered as the commercial towns.

The traders and merchants have created their own organizations and associations here.

They usually considered as the markets of Nadus.

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shagun bought a car for rs35000 the next year price went up to 38000 what was the percentage of price increase?

Posted by Yana Rathod 6 years, 1 month ago

CBSE > Class 07 > Mathematics

0 answers

ANSWER

What are ruminant

Posted by Praful Yadav 6 years, 1 month ago

CBSE > Class 07 > Science

3 answers

Naman Ahden 6 years, 1 month ago

Ruminants are organisms which bring back their chewed food into the mouth and chew it for sometimes again and again. Eg.- cow

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Jon Michel 6 years, 1 month ago

Ruminants are mammals that are able to acquire nutrients from plant-based food by fermenting it in a specialized stomach prior to digestion, principally through microbial actions.

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Srinidhi Panchal 6 years, 1 month ago

The grass eating plants are called ruminants

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A farmer wants to grow pea plants in his farm.Pea plants need a lot of nitrogen to grow what can the farmer do not supply his plants with nitrogen?

Posted by Soham Adap 6 years, 1 month ago

CBSE > Class 07 > Science

1 answers

Meghna Thapar 5 years, 6 months ago

Pea plants grow and produce in less than fertile soil. They prefer soil rich in organic material like compost and well-rotted manure. Pea plants do not like a lot of nitrogen in the soil, so do not fertilize. Loosen the soil to at least 12 inches deep so the roots have room to expand and anchor the plants. High protein substances and fresh greens are best for boosting the nitrogen level of compost. Some examples are alfalfa, cottonseed or soy meal; composted manure or chicken droppings; fresh lawn clippings (free of herbicide or pesticide) and fresh fruit and vegetable scraps.

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For any integer a, what is (-1) x a equal to

Posted by Khemesh Bisen 6 years, 1 month ago

CBSE > Class 07 > Mathematics

3 answers

Khemesh Bisen 6 years, 1 month ago

Thank you friend

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Utkarsh Chauhan 6 years, 1 month ago

Ans -a

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Soham Adap 6 years, 1 month ago

-a

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In what time will the simple interest on Rs. 400 at 10% per annum be the same as the simple interest on Rs. 1000 for four year at 4% per annum

Posted by Shalu Kiran 6 years, 1 month ago

CBSE > Class 07 > Mathematics

0 answers

ANSWER

4p-3=13 (p=0)

Posted by Babli Dad 6 years, 1 month ago

CBSE > Class 07 > Mathematics

0 answers

ANSWER

How is clayey soil useful for crops

Posted by Santosh Thakur 6 years, 1 month ago

CBSE > Class 07 > Science

4 answers

Sravya Masulla 6 years, 1 month ago

Clayey soil is not useful for crops but the loamy soil is useful for crops

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Avika Mathur 6 years, 1 month ago

Clayey soil has good water retension.So,it help in cuptivation of crop.In this a large amount of water is used

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Manya Kumari 6 years, 1 month ago

Loamy soil is useful for crops

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Manya Kumari 6 years, 1 month ago

Clayey soil is not useful for crops

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ANSWER

Explain how soil formed

Posted by Santosh Thakur 6 years, 2 months ago

CBSE > Class 07 > Science

6 answers

Avika Mathur 6 years, 1 month ago

Earthquake and volcani erruption of rock into small pieces.rock further vroken down thin form soil

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Arvind Kumae 6 years, 1 month ago

Soil is formed by the braeking down of rocks by the action of wind ,water, clamite etc. The proces called weathering.

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Mir Salman Kaif Ali 6 years, 1 month ago

Earthquake and volcanic eruption inside the earth make rock It will break and make soil

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Utkarsh Chauhan 6 years, 1 month ago

The soil is formed by the break down of rock.

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Santosh Thakur 6 years, 2 months ago

In addition to the rock particles, the soil contains

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Ekam Soni 6 years, 2 months ago

Soil are formed by The breakdown of Rock by the action of wind water and climate this process is called the mixture of human and Rock vertical is called soil a vertical section through different layer of the soil is called soil profile

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L parallel m and p is the transversal line if angle 3 is 55 degree find the measure of all the other angle

Posted by Nikhil Singh 6 years, 2 months ago

CBSE > Class 07 > Mathematics

0 answers

ANSWER

Meaning of ribs

Posted by Prerna Wastri 6 years, 2 months ago

CBSE > Class 07 > Science

1 answers

Avika Mathur 6 years, 1 month ago

Sceleton structure surrounding chest cavity

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Who were Gonds

Posted by Tanya Gupta 6 years, 2 months ago

CBSE > Class 07 > Social Science

2 answers

Tanya Gupta 6 years, 1 month ago

Thank you Yogita

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Yogita Ingle 6 years, 1 month ago

Gonds is largest tribe in central india like ahoms. but they cant flurish as ahoms. Gonds fight against big powers for their survival. Most historians belived gonds setteled in Gondwana between the ninth and thirteenth centuries. They ruled our kingdoms like: Gardha-Mandala, Deogarh, Chanda (present Chandrapur) and kherla in Central asia

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