Important Examination Notes Physics

 (1)  Ampere-hour is the unit of the amount of charge.

(2)  Fermi energy of the electron is called as absolute zero.

(3)  Image formed on the retina of a human eye by real and inverted.

(4)  Resistance of material increases with temperature, that is Metal.

(5)  All the magnetic materials lose their magnetic properties when strongly heated.

(6)  Australia has the world’s largest reserves of Uranium.

(7)  By parallel to the axis the magnetic field lines in the middle of a solenoid.

(8)  Electricians use rubber gloves while working because rubber is an insulator.

(9)  At the -40 degree Celsius, temperature are the temperature on Celsius and Fahrenheit scales equal.

(10)  Ball pen works on the principle of Capillarity and surface tension.

(11)  Concave mirror is to be used to obtain a parallel beam of light from a small lamp.

(12)  Einstein got the Nobel prize for Photo-electric effect.

(13)  Absorption of radio waves by the atmosphere depends on their frequency.

(14)  Radio wave of constant amplitude can be generated with Oscillator.

(15)  Filter is the electrical circuit used to get smooth DC output from a rectifier circuit called.

 (16)  Angular separation between two colors of the spectrum depends upon Angle of deviation.

(17)  Cylindrical lens is used to remove astigmatism for a human eye.

(18)  If a proton of mass is moving with the velocity of light, its mass will be Infinite.

(19)  Soft iron is the most suitable for the core of an electromagnet.

(20)  At a grid sub stations the voltage is stepped up to reduce loss of Power.