In electronics what comes under the tank circuit? (1) Resistance and capacity (2) Resistance and inductance (3) Capacity and inductance (4) Resistance, capacity and inductance Answer: (3) An LC circuit, also called a resonant circuit, tank circuit, or tuned circuit, consists of an inductor, represented by the letter L, and a capacitor, represented by the letter … Read more
The speed of light with the rise in the temperature of medium : (1) Increases (2) Decreases (3) Remains unaltered (4) Drops suddenly Answer: (3) The speed of light with the rise in the temperature of the medium remains unaltered because the speed of light doesn’t depend on temperature. It does depend, however, on the refractive … Read more
The shape of our milky way galaxy is (1) circular (2) elliptical (3) spiral (4) None of the above Answer: (3) The Milky Way is a barred spiral galaxy 100,000– 120,000 light-years in diameter containing 200–400 billion stars. It may contain at least as many planets, with an estimated 10 billion of those orbiting in the … Read more
Energy is continuously created in the sun due to: (1) nuclear fusion (2) nuclear fission (3) radioactivity (4) artificial radioactivity Answer: (1) The central mass of the sun becomes increasingly hot and dense, eventually initiating thermonuclear fusion in its core. It is thought that almost all other stars form by this process. nuclear fusion is a … Read more
Which one of the following is used for sunglasses? (1) Pyrex glass (2) Flint glass (3) Crooks glass (4) Crystal glass Answer: (3) A type of glass that contains cerium and other rare earth and has a high absorption of ultraviolet radiation is used in sunglasses. Sunglasses or sunglasses are a form of protective eyewear designed … Read more
The instrument that measures and records the relative humidity of air is (1) Hydrometer (2) Hygrometer (3) Lactometer (4) Barometer Answer: (2) A hygrometer is an instrument used for measuring the moisture content in the environment. Humidity measurement instruments usually rely on measurements of some other quantity such as temperature, pressure, mass or a mechanical or … Read more
When heated from 0C to 100C volume of a given mass of water will : (1) Increase gradually (2) Decrease gradually (3) Increase and then will decrease (4) Decrease and then will increase Answer: (4) When heated from 0C to 100 C volume of a given mass of water will first decrease and then increase. If … Read more
A gas thermometer is more sensitive than a liquid thermometer because of a gas : (1) is lighter than liquid (2) expands more than a liquid (3) is easy to obtain (4) does not change state easily Answer: (4) Gas is easily compressed so it would have a more versatile range of measurement at least in … Read more
Which combination of colours is the most convenient during day and night time? (1) Orange and blue (2) White and black (3) Yellow and blue (4) Red and green Answer: (4) Red and green are the most convenient combination during day and night time because of very precise visibility. In modern colour theory, also known as … Read more
Speed of sound is the greatest in : (1) Water (2) Air (3) Glass (4) Glycerine Answer: (3) Sound travels faster in liquids and non-porous solids than it does in air. It travels about 4.3 times as fast in water (1,484 m/s), and nearly 15 times as fast in iron (5,120 m/s), than in air at … Read more