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Posted by Paru ? 5 years, 2 months ago
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| Reflection | Refraction |
| This phenomenon usually occurs in mirrors. | This phenomenon usually occurs in Lenses. |
| Reflection can simply be defined as the reflection of light when it strikes the medium on a plane. | Refraction can be defined as the process of the shift of light when it passes through a medium leading to the bending of light. |
| The light entering the medium returns to the same direction. | The light entering the medium travels from one medium to another. |
| Considering the light waves, they bounce from the plane and change direction. | The light waves pass through the surface while simultaneously change from medium to medium. |
| The angle of incidence of the light is equal to the angle of reflection. | The angle of incidence is not equal to the angle of reflection. |
Posted by Jyothikrishna Rompicharla 5 years, 2 months ago
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Harsh Kumar Rai 5 years, 2 months ago
Yogita Ingle 5 years, 2 months ago
Oersted showed that electricity and magnetism are related to each other.His research later used in radio, television etc.
The unit of magnetic field strength is named Oersted in his honour.
Posted by Moksha Sahu 5 years, 2 months ago
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Posted by Jessie J 5 years, 2 months ago
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Gopal Roy 5 years, 2 months ago
Yogita Ingle 5 years, 2 months ago
The seed contains the future plant or embryo which develops into seedling under appropriate conditions .
Posted by Pushkar Kharb 5 years, 2 months ago
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Meghna Thapar 5 years, 2 months ago
In chemistry, the most commonly used unit for molarity is the number of moles per litre, having the unit symbol mol/L or mol⋅dm−3 in SI unit. A solution with a concentration of 1 mol/L is said to be 1 molar, commonly designated as 1 M.
Calculating Molarity Given Moles and Volume:
We do this by dividing by the molecular weight of NaCl (58.4 g/mole). Then, we divide the number of moles by the total solution volume to get concentration.
Posted by Abhishek Magi 5 years, 2 months ago
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Posted by Ni Nanthi 5 years, 2 months ago
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Yogita Ingle 5 years, 2 months ago
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Binary fission |
Multiple fission |
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1. Forms two daughter individuals |
1. Forms many daughter individuals |
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2. Divides only once |
2. Divides repeatedly |
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3. No residue is left |
3. Residue is left |
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4. Takes place in favourable conditions |
4. Takes place in favourable as well as unfavourable conditions |
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5. Immortality is present |
5. Immortality is absent |
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Example: Amoeba reproduces by binary fission |
Example: Plasmodium reproduces through multiple fission |
Posted by Deepthi .A 5 years, 2 months ago
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Yogita Ingle 5 years, 2 months ago
There are three different stages in the formation of urine by the filtration of blood through the nephrons. The process of urine formation in kidneys include the following steps:
(i) Glomerular filtration - Urine formation begins when the blood is filtered by the glomerulus then enters the Bowman's capsule and the glomerular filtrate is formed. The afferent arteriole entering the glomerulus is wider than the efferent arteriole in diameter. This increases the blood pressure within the glomerulus helps in the filtration. Glomerular filtrate is formed of all blood constituents except corpuscles and plasma proteins.
(ii) Tubular reabsorption - When the glomerular filtrate comes to the proximal tubule then the essential nutrients are reabsorbed. Glucose, amino acids, water, ions like sodium, potassium, chloride, bicarbonate, magnesium, calcium are reabsorbed from the glomerular filtrate. When the filtrate finally comes to the collecting duct ADH (anti-diuretic hormone) acts and reabsorbs the excess water and decreases the urine volume.
(iii) Tubular secretion - When the glomerular filtrate is in the proximal tubule creatinine, uric acid are secreted in it. When the filtrate goes to the distal part urea, potasium ion and some hydrogen ions are secreted in the form of urine.
Posted by Amal Fathima 5 years, 2 months ago
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Yogita Ingle 5 years, 2 months ago
Niche is the particular area within a habitat occupied by an organism. It also referes to the unique functional position of a species in a community of an ecosystem. Every organism performs important physical and functional roles within an ecosystem, which determines its niche.
Posted by Sakshi Priya 5 years, 2 months ago
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Meghna Thapar 5 years, 2 months ago
As hibiscus flower contains the colour pigment anthocynanin, not only can it be used as a natural indicator, it can also be used to produce natural dye that is eco-friendly and safe on human skin. Acid-base indicators are chemicals used to determine whether an aqueous solution is acidic, neutral, or alkaline. Because acidity and alkalinity relate to pH, they may also be known as pH indicators. Examples of acid-base indicators include litmus paper, phenolphthalein, and red cabbage juice.
Posted by Sakshi Priya 5 years, 2 months ago
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A n s w e r
Combustion of Liquified Petroleum Gas (LPG) is a chemical change because, after its combustion, the new substance formed changes chemically and cannot be turned back into LPG.
Posted by Raftar Mishra 5 years, 2 months ago
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Valves are flap-like structures present in heart that allow blood to flow in one direction. The valves control the flow of blood through the heart by opening and closing during the contractions of the heart. The opening and closing functions of the valves are controlled by pressure differences generated within the heart, as well as some muscles located within the heart. The heart has two kinds of valves, atrioventricular and semilunar valves.
- The two atrioventricular (AV) valves, which are between the atria and the ventricles, are the mitral valve and the tricuspid valve.
- The two semilunar (SL) valves, which are in the arteries leaving the heart, are the aortic valve and the pulmonary valve.
Thus there are four valves in all.
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Plants can change their shape with the help of cytoskeleton present in their cytoplasm during stress conditions.
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Power of lens is = 2 D
To find :-
It's focal length.
Solution:-
Focal length → The distance between the optical center and focus of the lens is known as focal length.
Power :- The degree of convergence and divergence of a mirror is known as its focal length.
The relationship between power and focal length of mirror:-
Put the given value,
→
→
→
→
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Pepsin |
Trypsin |
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Jatin Yadav 5 years, 2 months ago
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