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What Technological change helped in improving production of indian industry during the 20th century?
The technological changes included the following: (1) the use of new basic materials, chiefly iron and steel, (2) the use of new energy sources, including both fuels and motive power, such as coal, the steam engine, electricity, petroleum, and the internal-combustion engine, (3) the invention of newRead more
The technological changes included the following: (1) the use of new basic materials, chiefly iron and steel,
See less(2) the use of new energy sources, including both fuels and motive power, such as coal, the steam engine, electricity, petroleum, and the internal-combustion engine,
(3) the invention of new machines
What is the formula of magnification obtained with a lens?
For a lens, the magnification formula states that M = h i h o = d i d o , where and are the heights of the image and object, respectively, and and are the distances between the lens and the image and object, respectively.
For a lens, the magnification formula states that M = h i h o = d i d o , where and are the heights of the image and object, respectively, and and are the distances between the lens and the image and object, respectively.
See lessDue to which property of light sharp shadows of Oapque objects are obtained?
The rectilinear propagation of light means that light travels in a straight line in a given medium. When light falls on a opaque object, it cannot pass through it resulting in the formation of a shadow. This property of light helps in determining the shape of the shadow.
The rectilinear propagation of light means that light travels in a straight line in a given medium. When light falls on a opaque object, it cannot pass through it resulting in the formation of a shadow. This property of light helps in determining the shape of the shadow.
See lesswhere is the image formed when an object is at large distance from a concave mirror?
If an object is at infinity (very large distance) in front of a concave mirror, the image will formed at the focus.
If an object is at infinity (very large distance) in front of a concave mirror, the image will formed at the focus.
See lessWhat is the condition to disappear a lens in a transparent liquid?
When the refractive index of the glass is equal to the refractive index of the liquid. Example: Some types of crown glass (RI 1.50 - 1.54) will be invisible in silicone oil (RI 1.52045).
When the refractive index of the glass is equal to the refractive index of the liquid. Example: Some types of crown glass (RI 1.50 – 1.54) will be invisible in silicone oil (RI 1.52045).
See lessWhat is the minimum distance between an object and it's real image formed by a convex lens?
The minimum distance between an object and its real image formed by a thin convex lens of focal length f is Kf.
The minimum distance between an object and its real image formed by a thin convex lens of focal length f is Kf.
See lessName the part of a lens through which a ray of light passes without suffering any deviation.
A point on the principal axis of a lens through which light passes undeviated is called an optical center.
A point on the principal axis of a lens through which light passes undeviated is called an optical center.
See lessVariations are the basis of heredity. Explain.
Variation is important because it contributes to the evolution and forms the basis of heredity. Variation is caused due to gene mutations, the interaction of genes with the environment, and various combinations of genetic material. Remember that variation can occur through the asexual reproduction pRead more
Variation is important because it contributes to the evolution and forms the basis of heredity. Variation is caused due to gene mutations, the interaction of genes with the environment, and various combinations of genetic material. Remember that variation can occur through the asexual reproduction process too.
See lessWhen is a recessive trait able to show up?
Individuals inherit two versions of each gene, known as alleles, from each parent. In the case of a recessive trait, the alleles of the trait-causing gene are the same, and both (recessive) alleles must be present to express the trait. A recessive allele does not produce a trait at all when only oneRead more
Individuals inherit two versions of each gene, known as alleles, from each parent. In the case of a recessive trait, the alleles of the trait-causing gene are the same, and both (recessive) alleles must be present to express the trait. A recessive allele does not produce a trait at all when only one copy is present.
See lessWhat is the human being with XY pair of chromosomes called?
X and Y are sex chromosomes. The human animal which has an XY pair of chromosomes is called male.
X and Y are sex chromosomes. The human animal which has an XY pair of chromosomes is called male.
See less