The relation between the object distance (u), the image distance (v) and the focal length (f) of a spherical mirror (a concave or convex mirror)... View Article
It is the Ability of a lens to converge or diverge light rays/reciprocal of focal length of the lens.If the focal length is given in meters (m),... View Article
Focal length, f = 10cm Object distance, u = −10cm  (object distance is always taken negative as it is on the left side) To find: Position of the... View Article
(a) A concave mirror of focal length 10 cm can produce a magnified real image when the object is placed between the centre of curvature C and... View Article
We have to find ratio of resistance of two copper rods Length of wire X = 30 cm Length of wire Y = 10 cm Radius of wire X = 2 cm Radius of... View Article
(i) The uterus prepares itself every month to receive a fertilized egg/zygote- The inner uterus lining (endometrium) becomes thick and is... View Article
In the female reproductive system, the function of (i) ovary is to produce one egg every month. It is also responsible for the production of... View Article
Unsafe sexual acts can lead to sexually transmitted diseases. The two examples of sexually transmitted diseases caused by (i) virus: AIDS (HIV)... View Article
Government of India has prohibited prenatal sex determination by law to reduce the indiscrimination of female foeticide. Because of which the... View Article
Reabsorption of water from the urine depends upon the amount of water present in the body and the level of dissolved nitrogenous waste in the... View Article
The reaction of carboxylic acid with an alcohol in the presence of H2SO4 yields an ester.When primary alcohol is treated with a carboxylic acid... View Article
(i) Copper is heated in air to form the black copper oxide. The equation for the reaction is given below: 2Cu + O2 →2CuO (ii) Aluminium oxide is... View Article
Reaction for electrolytic refining: The impure copper metal is made ANODE and the pure metal of copper is CATHODE copper sulphate as an... View Article
Metals high up in reactivity series are extracted by electrolytic reduction. While those in the middle are extracted first by converting into... View Article
The cause of dispersion is the change in speed of light with wavelength .when white light enters the first surface of a Prism ,light of different... View Article
The apparent position of an object, when seen through the hot air, fluctuates or wavers. The basic cause of this observation is the refraction of... View Article
The relation between colour of scattered light and size of the scattering particle is, small size particles scatter the light of a shorter... View Article
Hypermetropia is also referred to as hyperopia or long-sightedness or far-sightedness. Hypermetropia is the condition of the eyes where the image... View Article
A person can see distant objects distinctly but cannot see nearby objects so clearly in this case, the image is formed behind the retina. This... View Article