LAWS

Question 1

HOOKE’S LAW

Answer 1

THE STRAIN OF THE MATERIAL IS PROPORTIONAL TO THE APPLIED STRESS WITHIN THE ELASTIC LIMIT OF THAT MATERIAL

Question 2

NEWTON’S FIRST LAW

Answer 2

OBJECTS WILL REMAIN AT REST OR MOVE WITH A CONSTANT VELOCITY UNLESS ACTED ON BY A RESULTANT FORCE

Question 2

NEWTON’S SECOND LAW

Answer 2

THR RATE OF CHANGE OF MOMENTUM OF AN OBJECT IS PROPORTIONA TO THE RESULTANT FORCE ACTING ON IT, AND TAKE SPLCAE IN THE DIRECTION OF FORCE

Question 3

NEWTON’S THIRD LAW

Answer 3

IF A BODY A EXCERTS A FORCE ON BODY B, BODY B EXCERTS AN EQUAL AND OPPOSITE FORCE ON BODY A

Question 4

WIEN’S DISPLACEMENT LAW

Answer 4

THE WAVELENGHT OF PEAK EMISSION FROM A BLACK BODY IS INVERSELY PROPORTIONAL TO THE ABSOLUTE TEMPERATURE

Question 5

STEFAN’S LAW

Answer 5

THE TOTAL ELECTROMAGNETIC RADIATION ENERGY EMITTED PER UNIT TIME BY A BLACK BODY IS GIVEN BY THE POWER FORMULA

Question 6

SNELL’S LAW

Answer 6

AT THE BOUNDARY BETWEEN ANY TWO GIVEN MATERIALS, THE RATION OF THE SINE ANGLE OF INCIDENCE TO THE SINE OF THE ANGLE OF REFRACTION IS A CONSTANT

Question 7

THE PRINCIPLE OF SUPERPOSITION

Answer 7

THIS STATES THAT IF WAVES FROM TWO SOURCES OCCUPY THE SAME REGION THEN THE TOTAL DISPACEMENT AT ANY ONE POINT IS THE VECTOR SUM OF THEIR INDIVIDUAL DISPLACEMENTS AT THAT POINT

Question 8

THE LAW OF CONSERVATION OF CHARGE

Answer 8

ELECTRIC CHARGE CANNOT BE CREATED OR DESTROYED. CHARGE CANNOT PILE UP AT A POINT

Question 9

OHM’S LAW

Answer 9

THE CURRENT IN A METAL WIRE AT CONSTANT TEMPERATURE IS PROPORTIONAL TO THE PD ACROSS IT