Check Tamil Nadu 12th Physics Public Exam 16th March 2020 Analysis, Answer Key: Students who are successfully completed +2 Economics Exam March 2020 verify Part-1 one mark question correct answers serial number wise.

The Tamil Nadu Directorate Government Examinations allotted B series Physics Question paper tentative answers verify now. Final 12th Physics Public Exam Answer Key 2020 released soon, Invites the objections online mode from the students.

Name Of The Exam: Plus Two Physics Public Exam

Exam Date: 16th March 2020

Total Marks For Exam: 70 Marks

Exam Duration: 3.00 Hours

Exam Language: Tamil, English Medium

## Tamil Nadu 12th Physics Public Exam 2020 Analysis

Question Number 1: The frequency range of 30 MHz to 400 GHz is used for

a). Satellite communication

b). Ground wave propogation

c). Space wave propagation

d). Sky wave propagation

Question Number 2: In an oscillating LC circuit the maximum charge on the capacitor Q. The charge on the capacitor when the energy is stored equally between the electric and magnetic filed is

a). Q b). Q/2 c). Q/√3, d). Q/√2

Question Number 3: Type of material which emit white light in LED

a). GaInN b). Sic c). AIGap d). GaAsP

Question Number 4: A particle of mass m, carrying charge q is accelerated through a potential of V (Volt) When this accelerated charge comes under the influence of perpendicular magnetic filed, the force acting on it is

a). √zq³BV/m³, b). √zq³BV/m, c). √zq³B²V/2m d). √zq³B²V/m³

Question Number 5: Charging current for a capacitor is 0.2 A, find the displacement current

a). Zero, b). 0.2 A c). 0.4 A d). 0.1 A

Question Number 6: In Bohr Atom Model when the principal quantum number (n) increases the velocity of electron

a). Increases and then decreases b). increases c). decreases d). remains constant

### TN 12th Physics Public Exam Answer Key 2020

Question: The nucleus is approximately spherical in shape. Then the surface area of nucleus having mass number A varies as

12th Public Exam Physics Answer Key 2020