Soft iron is utilized in making an electromagnet on the grounds that: 1. It is a strong magnet, 2. It has great attractive properties, and 3. It gains and loses attraction rapidly relying upon magnetic field.
Two ways of increasing the strength of an electromagnet are: 1. Increase more number of turns to the curl. 2. Increase the progression of current through the curl.
<p>First draw a ray corresponding to the main axis(principal axis). Allow it to go through the focus after refraction.At that point draw another ray going through the optical focus. Allow this ray to go through with no deviation. Both the refracted rays would meet at a similar point. It implies that, both the refracted rays are separating. So expand both these rays past the lens. The rays will frame an image on the left side, behind the image. The image shaped will be virtual, erect and the image will be bigger than that of the object. </p> <p><img alt="" src=" " /></p>
<p>At the point when an object is put at a limited separation from the lens, a virtual picture is shaped between the pole and the focal point of the convex lens. The size of the picture is bigger than that of the object. O is the object and I is the picture/image. The picture framed is, virtual, diminished and erect. Since the image framed is virtual, diminished and erect, The magnification is positive. Value is less than 1.</p> <p><img alt="" src=" " /></p>
<p>To draw a ray diagram at 2F of convex lens: First draw a ray corresponding to principal pivot/axis. Allow it to go through the focus after refraction. Draw another ray going through the optical focus. Allow the ray to go through with no deviation. The image is framed at 2F. The image got is real, inverted and the image is of same size as that of the object.</p> <p><img alt="" src=" " /></p>
Mirror Formula: 1/F = 1/V + 1/U For concave mirror U, V and F are negative, So ⇒1/–15 = 1/V + 1/--25 ⇒ 1/V = 1/–15 + 1/25 ⇒ 1/V =( 25-15 ) / –375 ∴ V= –37.5 CM. Thus, in this way, to get picture of the item sharp, screen must be put at 37.5 cm.
Given: Object height, hₒ = 4.0 cm Object distance, u= 25.0 cm. Focal length, f= 15.0 cm. According to mirror formula, Mirror Formula: 1/F = 1/V + 1/U ⇒ 1/–15 = 1/V + 1/–25 ⇒ 1/V = 1/–15 + 1/25 ⇒ 1/V =( 25-15 ) / -375 ⇒ V = –37.5 CM. To find image height (hᵢ), For concave U, V and F are negative, We know that: <p><img alt="" src=" " /></p> Therefore, size of image is 6 cm.
The word Genetics is derived from the Greek word genetics which means origin. Genetics is a branch of biology and is concerned with studying genes, heredity, and genetic variations in organisms. Gregor Mendel is known as the father of genetics. He worked on plants and he was the first one to discover fundamental laws of inheritance.
The basic physical unit and functional unit of inheritance or heredity is a gene. Genes are carried or passed from parents to their offspring. The information for specifying each trait are carried from parents to their younger ones. Genes are set of information arranged one by one like structures called chromosomes. Genes help in determining the appearance, behavior and character, etc of an organism. The basic unit of genes is DNA.
