# Physics Notes Onerliner Points for SSC Exams ## Physics Notes Onerliner Points for SSC Exams

Today is the Part III of oneliner points on Physics for upcoming SSC CHSL and SSC CGL 2018 Exams. These oneliner points will cover Railway NTPC, Apprentice Etc. Here we collect all the major points from which General questions were frequently asked in SSC and Railway. You can notedown these points in your notebook so it would help you during exams to memorize it easily.
• If Vo be the orbital velocity of a satellite in a circular orbit close to the earth’s surface and Ve is the escape velocity for the earth, then the relation between two is Ve=√2Vo.
• The earth revolves around the sun in one year. If the distance between them becomes double, the new period of revolution will be 2√2 years.
• The escape velocity of a particle of mass m varies as m^0.
• A geostationary satellite should be launched such that it moves that west to east in the equatorial plane.
• The plane of the orbit of an earth satellite passes through the center of the earth.
• The tidal waves in the sea are primarily due to the gravitational effect of the moon on the earth.
• If the earth were to shin faster, acceleration due to gravity at poles remains the same.
• The time period of an artificial satellite in a circular orbit is independent of mass of the satellite.
• A ball is dropped from a space craft revolving around the earth. It will continue to move with the same speed along the original orbit of the space craft.
• When a particle executing S.H.M passes through the mean position, it has maximum K.E and minimum P.E.
• The total energy of a particle vibrating in S.H.M is proportional to the square of its amplitude.
• A simple pendulum is oscillating in a lift. If the lift starts moving upwards with a uniform oscillation, the period will be shorter.

• In order to double the period of a simple pendulum, its length should be quadrupled.
• A small drop falls from the rest from a large height h in air. The final velocity is almost independent of h.
• When the terminal velocity is reached, the acceleration of a body moving through a viscous medium is 0.
• The inside pressure inside a drop or a bubble is inversely proportional to its radius.
• When the temperature increases, the angle of contact of liquid decreases.
• Kerosene oil rises up in the wick of lantern because of surface tension.
• Insect can move on the surface of water without sinking due to surface tension of the water.
• When a body is immersed in a liquid, the force acting on it is upthrust.
• Water drops do not stick to the oily surface due lack of adhesive force.
• Newton’s first law is also known as law of inertia.
• A man inside an artificial satellite feels weightlessness due to force of attraction due to earth is zero.
• Fat can be separated from milk in a cream separator because of centrifugal force.
• If a body moves in constant speed in a circle, then no work is done on it.
• The process of combining string is known as concatenation.
• A bullet hits and gets embedded in a solid block resting on a horizontal frictionless table. Only momentum is conserved in this process.
• The unit of Plank’s constant is JS.
• Kilowatt is a unit of power.
• Lightyear is measurement of stellar distances.
• Very small time intervals can be accurately measured by Atomic Clocks.
• The conservation of momentum helps a rocket to work.
• The value of g on the earth’s surface changes due to both rotation and shape of earth.
• Heat Energy of an object is total energy of the molecules of the object.
• Galileo developed the early thermometers.
• Heat is associated with the K.E of random motion of molecules.
• SI unit of temperature is Kelvin.
• Centigrade and Fahrenheit temperatures are same at 40Degree Celsius.
• The absolute zero on Celsius Scale is 273.15 Degree Celsius.
• For the measurement of temperature of the order of 400degree Celsius, we will prefer Thermocouple.
• The temperature of a gas is measured with a Pyrometer.
• The normal temperature of human body is 37Degree Celsius.
• SI unit of heat is Joule.
• When an object is heated, the molecules of that object began to move faster.
• At 0K the velocity of the molecules is 0.
• Coefficient of linear expansion always remains with the increase in temperature.
• Mercury Thermometers can measure temperature up to 360 Degree Celsius. 