RRB NTPC GK Questions 2026

The Dronacharya Award was instituted in 1985 and honours coaches who have consistently produced outstanding athletes, the name being taken from the teacher of archery in the Mahabharata.

The Arjuna Award was instituted in 1961 to recognise consistently outstanding performance by a sportsperson over a period of years, and it remains the standard recognition for a leading active athlete who has not won the country highest sporting honour.

TOPS was launched in 2014 under the National Sports Development Fund and was thoroughly revamped in 2018.

Khelo India was launched in 2018 by merging earlier grassroots sports programmes into a single national scheme, and its first competition, the Khelo India School Games, was held at New Delhi in January of that year.

The day marks the birth anniversary of Major Dhyan Chand, the hockey player who was part of the Indian sides that won Olympic gold in 1928, 1932 and 1936, and it is the day on which the national sports awards are conferred at Rashtrapati Bhavan.

The molecules of the atmosphere are much smaller than the wavelength of visible light, and such particles scatter short wavelengths far more strongly than long ones.

In hypermetropia the eye lens is too weak or the eyeball is too short, so rays from a nearby object are not converged enough and the image falls behind the retina.

The retina carries two kinds of photoreceptor. Cone cells need reasonably bright light to work and respond selectively to different wavelengths, so they give us the sensation of colour; when the cones are defective a person is colour blind.

The refractive index of a transparent medium is not the same for every colour; it rises as the wavelength falls.

Two steps are needed. First, the focal length must be converted to metres: 50 centimetres is 0.5 metre.

The power of a lens measures how strongly it converges or diverges light, and it is defined as one divided by the focal length expressed in metres.

The least distance of distinct vision, also called the near point, is the smallest distance at which an object can be held and still be seen clearly without strain.

The iris is the coloured ring of muscle lying just behind the cornea. By contracting and relaxing it makes the central opening, the pupil, smaller in bright light and larger in dim light, and in this way it regulates how much light falls on the retina.

A soap film is extremely thin, and light reflected from its front surface meets light reflected from its back surface.

The cornea is the thin, transparent, slightly bulging membrane that forms the front surface of the eyeball, and light must pass through it before reaching anything else.

Myopia, or short-sightedness, is the defect in which nearby objects are seen clearly but distant objects look blurred. It arises either because the eye lens has become too converging, that is its focal length is too short, or because the eyeball has grown too long from front to back.

The CITES Secretariat is based at Geneva in Switzerland and is administered under the United Nations Environment Programme; it services the Conference of the Parties, maintains the appendices and advises member states on permits and enforcement.

This large land snail is native to East Africa and reached India long ago, probably through the trade in ornamental plants and shells.

The Wild Life (Protection) Amendment Act of 2022 brought the parent Act into line with India obligations under CITES, reorganised its schedules and for the first time inserted an express power allowing the Central Government to regulate or prohibit the import, trade, possession and proliferation of invasive alien species.

Neem is native to the Indian subcontinent, so by definition it cannot be an alien species here, however widely it has been planted; a species is alien only outside its natural range.