Skip to main content

Posts

Showing posts with the label universe

Fundamental forces

Fundamental forces: The fundamental forces of nature are the building blocks of the universe as we know it. These forces govern the behavior of all matter and energy, and they are responsible for the interactions between particles and the structure of the universe. There are four fundamental forces of nature: gravity, electromagnetism, the strong nuclear force, and the weak nuclear force. Gravity is the force that attracts all objects with mass towards one another. It is the force that keeps us on the ground and holds the planets in orbit around the sun. It is the weakest of the four fundamental forces, but it becomes increasingly powerful as the mass of the objects involved increases. Electromagnetism is the force that causes electric charges to interact with one another. It is responsible for the behavior of light, radio waves, and other electromagnetic waves. It also explains how magnets work and the forces that hold atoms together. It is much stronger than gravity. The strong nucle...

Daily Quiz For UPSC Ki Taiyari

Daily Quiz For UPSC Ki Taiyari Q-1.To a space to on moon,The lunar sky during day time appears A) White B) Blue C) Black✓ D) Red Q-2. The distance between the earth and sun in million km is A) 111 B) 149✓ C) 168 D) 193 Q-3. Star which appear single to the naked eye but are double stars when observed through telescope are known as A) Cosmic stars B) Quasars C) Binaries✓ D) Novae and supernovae Q-4. What are sun spots? A) Regions on Earth without winter climate B) Desert areas on the sun C) Dark patches on the surface of the sun which are cooler areas D) Dark patches on the surface of the sun resulting from a localised fall in the temperature to about 4000K✓ Q-5. The brightest star in the sky? A) Alfa century B) Proxima century C) Sirius D) Sun✓

Daily Quiz For UPSC Ki Taiyari

Daily Quiz For UPSC Ki Taiyari Q-1. Which of the following gases is most predominant in the Sun? A) Helium B) Hydrogen✓ C) Nitrogen D) Ozone Q-2. A black hole is a A) Contracted star with intense gravitational pull✓ B) Star with very low surface temperature C) Star with no atmosphere D) Pulsating star Q-3. Which one of the following is correct? Great bear is a A) Galaxy B) Planet C) Star D) Constellation✓ Q-4. Asteroids have their orbits between the planets A) Mercury and Venus B) Earth and Mars C) Mars and Jupiter✓ D) Jupiter and Saturn Q-5. Halley's comet appears once in a period of A) 24 years B) 32 years C) 76 years✓ D) 84 years

Daily Quiz For UPSC Ki Taiyari

Daily Quiz For UPSC Ki Taiyari Q-1. Which of the following statement is/ are correct with regard to Milky way? 1) It is a spiral galaxy. 2) The solar system resides in one of it's spiral arm. A) 1 only B) 2 only C) Both 1 & 2✓ D) Neither 1 nor 2 Q-2. Among the following, which planet takes maximum time for one revolution around the sun? A) Earth B) Jupiter✓ C) Mars D) Venus Q-3. Which of the folllowing statement is correct with reference to our solar system? A) The earth is the densest of all the planets in our solar system✓ B) The predominant element in the composition of earth is silicon C) The sun contains 75% of the mass of the solar system D) The Diameter of the sun is 190 times that of the earth Q-4. The Srnith-tuttle comet will crash with Earth in A) 2106 AD B) 2116 AD✓ C) 2126 AD D) 2136 AD Q-5. The Correct sequence of the following planets in term of gravity,in descending order A) Saturn,Earth,Neptune,Uranus B) Neptune,Ur...

Daily Quiz For UPSC Ki Taiyari

Daily Quiz For UPSC Ki Taiyari Q-1. The Saturn rings were discovered by A) Copernicus B) Newton C) Galileo✓ D) None of the above Q-2. The solar Corona mainly consists of A) Cosmic rays B) Molten lava✓ C) Gases D) Ice Q-3. Comets are celestial bodies moving about the solar system in A) Elliptical or hyperbolic orbits usually accompanied by a shining tail B) Elliptical orbits usually accompanied by a long shining tail✓ C) Hyperbolic orbit always accompanied by a shining head D) Hyperbolic orbit without projecting any tail or head Q-4. The Foucault experiment is proof of which one of the following ? A) Revolution of earth B) Rotation of Earth✓ C) Rotation of moon D) Revolution of moon Q-5. The radiant energy of the sun is transmitted in the form of A) Short waves✓ B) Long waves C) Particles D) None of the above

Daily Quiz For UPSC Ki Taiyari

Daily Quiz For UPSC Ki Taiyari Q-1. Which of the following celestial bodies bear, 'The sea of Tranquility' and 'The ocean of storms' ? A) Mars B) Venus C) Moon✓ D) Sun Q-2. The time required by moonlight to reach the earth is A) 1sec B) 1.3 sec✓ C) 2 sec D) 2.3 sec Q-3. The strongest evidence that comets are members of our solar system comes from A) Their composition✓ B) Their effect on the lives of man C) The shape of their orbits D) The shape and length of their tails Q-4. The constellations of stars appear at different positions in the sky at different times during night mainly A) Because earth rotates about it's axis✓ B) Because earth revolve round the sun C) Because of optical illusion D) Because Celestial bodies are changing their positions all the time Q-5. If there is no sun,the colour of the sky would be A) Orange B) Blue C) Yellow D) Black✓

Daily Quiz For UPSC Ki Taiyari

Daily Quiz For UPSC Ki Taiyari Q-1. Who of the following discovered the laws of planetary orbits? A) Galileo Galilei B) Nicholas Copernicus C) Johanries Kepler✓ D) Isaac Newton Q-2. Twelve constellations referred to as zodiac are? A) Signs of Roman gods B) Imaginary region that encompass the path of the planets C) A group of stars✓ D) None of the above Q-3. The term 'meteor' is applied to an interplanetary body A) After it enters the atmosphere of the earth B) After it enters the Earth's atmosphere and explodes in mid air as ball of fire✓ C) After it enters the Earth's atmosphere and lands on the surface of the Earth without exploding in mid air D) Before it enters the Earth's atmosphere Q-4. Which of the following statements regarding shooting stars is incorrect? A) They are meteors B) They are the debris which got separated from a comet C) They emit light due to extremely high temperature caused by friction while they are passing through Earth...

Daily Quiz For UPSC Ki Taiyari

Da ily Quiz For UPSC Ki Taiyari Q-1. The Milky way extends through a distance A) 1 light year B) 8 light year C) 10^5 light year✓ D) 10^10 light year Q-2. The period of one revolution of sun around the center of the Galaxy is called A) Parsec B) A black hole C) Cosmic year✓ D) Light year Q-3. Super Nova is A) An asteroid B) A black hole C) A comet D) A dying star✓ Q-4. The altitudes of heavenly bodies appear to be greater than they actually are: this is due to A) Vertical motion of these heavenly bodies B) Motion of the earth C) Atmospheric refraction✓ D) These are visible because of light of the sun reflected from their surface Q-5. The same side of the Moon always faces the earth because A) Moon and the earth have the gravitational force B) Moon can't change it's position C) the period of rotation of the Moon on it's axis and period of revolution around earth is almost the same✓ D) The period of rotation of the Moon is not...

Daily Quiz For UPSC Ki Taiyari

Da ily Quiz For UPSC Ki Taiyari Q-1. Which planet takes the same number of days for rotation and revolution? A) Mars B) Venus✓ C) Mercury D) Jupiter Q-2. On Which of the following planets of the solar system does the sun rise in the west and set in East? A) Venus ✓ B) Mars C) Jupiter D) Saturn Q-3. Which of the following planets of the solar system has the longest day? A) Mercury B) Jupiter C) Venus✓ D) Earth Q-4. The sunspots cause A) Aurora borealis and Aurora Australis B) Magnetic storm on the surface of the sun C) Polar Auroras D) All of the above✓ Q-5. The light coming from stars gives the idea of their A) Size B) Rotational speed C) Mass D) Temperature✓

Daily Quiz For UPSC Ki Taiyari

Daily Quiz For UPSC Ki Taiyari Q-1. Which of the following planets is known as morning star? A) Mercury B) Venus✓ C) Mars D) Jupiter Q-2. Which planet of the solar system spins on it's axis at the fastest rate? A) Mercury B) Earth C) Jupiter✓ D) Saturn Q-3. Which planet is known as the 'watery planet'? A) Mercury B) Earth✓ C) Mars D) Jupiter Q-4. Which planet looks reddish in the night sky? A) Mercury B) Mars✓ C) Jupiter D) Saturn Q-5. The correct sequence of planets in the descending order of their equatorial diameter is? A) Mars, Mercury, Uranus, Earth B) Earth, Mars, Mercury, Uranus C) Mercury, Uranus,Mars , Earth D) Uranus, Earth, Mars, Mercury✓