SSC MTS GK Questions 2026

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.

UPI was launched by NPCI in 2016 as a system that lets a user link several bank accounts to one mobile application and transfer money instantly using a virtual payment address or a QR code, without sharing account numbers.

NavIC is the operational name of the system formally called the Indian Regional Navigation Satellite System, built by ISRO so that the country would not depend on a foreign constellation for positioning in a crisis.

The 802.15 family covers wireless personal area networks, the very short-range links meant to join the devices a single person carries, and Bluetooth was standardised within it as IEEE 802.15.1.

An accelerometer measures acceleration along three axes, which includes the constant pull of gravity, so the phone can work out which way is down and therefore how it is being held.

NFC is deliberately designed for extremely short range, so the two devices must be touching or nearly touching before any data passes.

GSM is the European-born digital standard that replaced the analogue first generation networks; it introduced the removable SIM card, digital encryption of the radio link, international roaming and the short message service, on which a plain text message is limited to one hundred and sixty characters.

Android uses a modified Linux kernel at its lowest layer to manage memory, processes, power and device drivers, and builds its own runtime, libraries, application framework and user interface above it.

The International Mobile Equipment Identity is a fifteen-digit number assigned to every handset, made up of a code identifying the type approval of the model, a serial part and a final check digit.

The SIM is a small smart card issued by the operator that stores the subscriber identity, the authentication keys used to prove that identity to the network, and a limited amount of contact and message data.

A telephone conversation requires both parties to speak and listen at the same time, so a mobile link must carry traffic in both directions together.

LTE is the radio access technology of fourth generation mobile networks, standardised by the Third Generation Partnership Project.

A nineteenth century scholar and reformer, he compiled Hemkosh, which was the first Assamese dictionary to be arranged on etymological lines and which fixed much of the modern spelling of the language; the work was published after his death.

Manvini Bhavai is his novel of rural Gujarat during a devastating famine, written from the inside of peasant life, and it is the work for which he received the Jnanpith Award.

A leading writer of the Jonaki era that began with the magazine of that name in 1889, he wrote humour, satire, plays and the much loved collection of folk tales Burhi Aair Sadhu, meaning Grandmother Tales, and he composed O Mur Apunar Desh, which is now the state song of…

The fifteenth and sixteenth century Vaishnava saint founded the Ekasarana faith and shaped much of Assamese cultural life: he composed the devotional songs known as Borgeet, wrote the one-act plays called Ankiya Nat that are staged as Bhaona, gave rise to the dance tradition now called Sattriya, and wrote the…

Writing in the fourteenth century, he put the Ramayana into Assamese verse in seven books, which is what the name Saptakanda records, and the work is counted among the first translations of the epic into any modern Indian language.