Explore topic-wise InterviewSolutions in Current Affairs.

It is REPONSE by a freely MOVING ORGANISM to the FORCE of GRAVITY.

It is reponse by a freely moving organism to the force of gravity.

A reflecting surface which is USED in some gas lasers in order to reduce the reflection LOSSES that arise from USING the external MIRRORS.

A reflecting surface which is used in some gas lasers in order to reduce the reflection losses that arise from using the external mirrors.

A wave occuring in the surface which is USED in some gas leasers in order to REDUCE the reflection LOSSES that arise from using the EXTERNAL MIRRORS. 

A wave occuring in the surface which is used in some gas leasers in order to reduce the reflection losses that arise from using the external mirrors. 

A PRIMARY ELECTRIC cell wherein TWO electrolytes are kept APART due to their difference in densities.

A primary electric cell wherein two electrolytes are kept apart due to their difference in densities.

GRAVITY, ELECTROMAGNETIC force, STRONG force and WEAK nuclear force.

Gravity, electromagnetic force, strong force and weak nuclear force.

ISAAC NEWTON.

Isaac Newton.

The region AROUND a massive body where in a force of attraction is felt by other bodies. e.g, a gravitational FIELD exists on and near the surface of the earth EXPERIENCE a force of attraction TOWARDS the centre of the earth. 

The region around a massive body where in a force of attraction is felt by other bodies. e.g, a gravitational field exists on and near the surface of the earth experience a force of attraction towards the centre of the earth. 

No

No

ESCAPE VELOCITY

Escape velocity

The GRAVITATIONAL pull of the EARTH causes AIR pressure.

The gravitational pull of the earth causes air pressure.

When moon, and sun are in ONE LINE, their gravity COMBINES to produce a HIGH SPRING tide.

When moon, and sun are in one line, their gravity combines to produce a high spring tide.

The earth’s gravity is a long DISTANCE FORCE which REACHES far into space and keeps satellites in orbit.

The earth’s gravity is a long distance force which reaches far into space and keeps satellites in orbit.

The energy required, by the ORBITING BODY so that it MAY leave the orbit and escape to infinity is CALLED binding energy.

The energy required, by the orbiting body so that it may leave the orbit and escape to infinity is called binding energy.

The force experienced PER unit mass PLACED at the POINT in the gravitational FIELD is called intensity of the gravitational field.

The force experienced per unit mass placed at the point in the gravitational field is called intensity of the gravitational field.

The space AROUND a MATERIAL particle in which ANOTHER material particle EXPERIENCES a force which is called gravitational force.

The space around a material particle in which another material particle experiences a force which is called gravitational force.

The acceleration with which a BODY, FALLS towards the earth i sknown as acceleration DUE to GRAVITY.

The acceleration with which a body, falls towards the earth i sknown as acceleration due to gravity.

A gravitational WAVE is a FLUCTUATION in the curvature of space TIME which propagates as a wave, travelling outward fromthe source. Predicated by einstein’s theory of general relativity, the waves TRANSPORT ENERGY known as gravitational radiation. 

A gravitational wave is a fluctuation in the curvature of space time which propagates as a wave, travelling outward fromthe source. Predicated by einstein’s theory of general relativity, the waves transport energy known as gravitational radiation. 

In VACUUM

In vacuum

The experiment to PROVE that both HEAVY and light bodies TAKE the same time to fall down the EARTH.

The experiment to prove that both heavy and light bodies take the same time to fall down the earth.

It is ALWAYS POSITIVE

It is always positive

Space

Space

1.  Both spatial distances and time changed .
2.  For a PROPER description of nature both time and SPACE should be COMBINED into a FOUR dimensional space - time . 

This theory considered how NATURE appears when viewed from DIFFERENT interial frames moving uniform velocities with respect to one ANOTHER. EINSTEIN argued that in an accelerated frame gravitation could be simulated.

This theory considered how nature appears when viewed from different interial frames moving uniform velocities with respect to one another. Einstein argued that in an accelerated frame gravitation could be simulated.

EVERY particle in the universe ATTRACTS every other particle with a force which is DIRECTLY proportional to the product of their masses and inversely proportional to the square of DISTANCE between them.

Every particle in the universe attracts every other particle with a force which is directly proportional to the product of their masses and inversely proportional to the square of distance between them.

The LAW of GRAVITATION can be APPLIED to:

1.  Find the force exertes by planets on other BODIES.
2.  Determine the motion of the planets around the sun.

The law of gravitation can be applied to:

The square of the PEROID of any planet about the SUN is proportional TOTHE cube of the planets MEAN distance from the sun.

The square of the peroid of any planet about the sun is proportional tothe cube of the planets mean distance from the sun.

The LINE joining the PLANET to the SUN SWEEPS out equal AREAS in equal times. 

The line joining the planet to the sun sweeps out equal areas in equal times. 

The motion of a planet is an ELLIPSE with the sun at one FOCUS. ( The other focus has no SIGNIFICANCE )

The motion of a planet is an ellipse with the sun at one focus. ( The other focus has no significance )

The THREE LAWS of KEPLER’s regarding planetary motionare :-

1.  Laws of orbits
2.  Law of areas
3.  Law of PERIODS

The three laws of kepler’s regarding planetary motionare :-

It is a satellite which REMAINS in fixed POSITION at a specific HEIGHT over the equator.

It is a satellite which remains in fixed position at a specific height over the equator.

When a body over COMES the earth’s gravitational pull, it continues moving outward TILL it becomes subject to the influence of some other HEAVENLY body. It GOES on atteacted towards it.

When a body over comes the earth’s gravitational pull, it continues moving outward till it becomes subject to the influence of some other heavenly body. It goes on atteacted towards it.

The velocity which is gien to an artifical earth’s SATELLITE a few HUNDRED kilometres above the earth€s surface so that it may START REVOLVING round the earth is CALLED orbital velocity.

The velocity which is gien to an artifical earth’s satellite a few hundred kilometres above the earth€s surface so that it may start revolving round the earth is called orbital velocity.

Due to air friction, the satellite loses, a part of its TOTAL energy and the satellite COMES closer to earth’s surface. Thus it loses height. When they enter into denser REGION of the earth’s atmosphere, theheat generated causes them to BURN out.

Due to air friction, the satellite loses, a part of its total energy and the satellite comes closer to earth’s surface. Thus it loses height. When they enter into denser region of the earth’s atmosphere, theheat generated causes them to burn out.

S.I UNIT is J / KG. It is a SCALAR QUANTITY.

S.I unit is J / Kg. It is a scalar quantity.

A surface, at all points of which the GRAVITATIONAL potential is the same is called, an equipotential surface. No work is DONE against the gravitational FORCE in MOVING a unit, ( or any other mass ) mass from one point to another on an equipotential surface, because difference of potential between any two point is zero.

A surface, at all points of which the gravitational potential is the same is called, an equipotential surface. No work is done against the gravitational force in moving a unit, ( or any other mass ) mass from one point to another on an equipotential surface, because difference of potential between any two point is zero.

It BECOMES FOUR TIMES the PREVIOUS VALUE.

It becomes four times the previous value.

The value of acceleration due to gravity at a place is AFFECTED by the following FACTORS:

1.  Latitude of the PLANE
2.  ALTITUDE height from the earth’s surface.
3.  Depth 

The value of acceleration due to gravity at a place is affected by the following factors:

The centre of GRAVITY of a body PLACED in a centre of a body placed in a GRAVITATIONAL field is that point through which the net gravitational force by the field acts.

The centre of gravity of a body placed in a centre of a body placed in a gravitational field is that point through which the net gravitational force by the field acts.

Gravity

Gravity

GRAVITATIONAL is one of the four fundamental FORCES of nature. This effect our actions in EVERY day life such as walking, jumping, throwing a ball and so on. Also it is responsible for a initiating the birth of stars, for controlling the entire structure of the universe and evolution of the universe. Thus we FIND that gravitational force is the most important force. In FACT it is the weakest force among the four fundamental forces of nature.

Gravitational is one of the four fundamental forces of nature. This effect our actions in every day life such as walking, jumping, throwing a ball and so on. Also it is responsible for a initiating the birth of stars, for controlling the entire structure of the universe and evolution of the universe. Thus we find that gravitational force is the most important force. In fact it is the weakest force among the four fundamental forces of nature.

Johnannes KEPLER.

Johnannes Kepler.

GRAVITY 

Gravity 

The centre of point at which all on OBJECTS’s WEIGHT APPEARS to ACT.

The centre of point at which all on objects’s weight appears to act.

It is the force of attraction between any two OBJECTS CAUSED by their masses.

It is the force of attraction between any two objects caused by their masses.