12th Physics Model Exam -1

St. Britto Hr. Sec. School - Madurai

12th Physics Model Exam -1-Aug 2020

Time : 2.30 Hours

Part - A

Multiple Choice Question - Answer All Question

Which charge configuration produces a uniform electric field?

point Charge
infinite uniform line charge
uniformly charged infinite plane
uniformly charged spherical shell

For continuous charge distributions, _____ methods can be used.

integration
differentiation
multiplication
addition

__________ is a very large unit of capacitance.

Farad
Microfarad
Picofarad
Nanofarad

For continuous charge distributions, _____ methods can be used.

integration
differentiation
multiplication
addition

The dimension of \(\frac { 1 }{ { \mu }_{ 0 }{ \varepsilon }_{ 0 } } \) is

[LT^-1]
[L²T^-2]
[L^-1T]
[L^-2T²]

Which of the following electromagnetic waves has the highest frequency?

radio waves
micro waves
X- rays
૪-rays

X-rays were discovered by ____.

Roentgen
Thomson
Fitch
de- Broglie

The and potentials are called the critical potentials of an atom.

chemical, magnetic
electric, magnetic
electric, electromagnetic
excitation, ionization

The variation of frequency of carrier wave with respect to the amplitude of the modulating signal is called ___________

Amplitude modulation
Frequency modulation
Phase modulation
Pulse width modulation

The technology used for stopping the brain from processing pain is

Precision medicine
Wireless brain sensor
Virtual reality
Radiology

Part - B

Generic 2 - Answer All Question

Define ‘Electric field’.

Explain the concept of intensity of electromagnetic waves.

Write the uses of Micro waves.

What is meant by radioactivity?

What is a reactor core?

Give the factors that are responsible for transmission impairments.

What does RADAR stand for?

Distinguish between Nanoscience and Nanotechnology.

Mention any two advantages and disadvantages of Robotics.

What are black holes?

Give the relation between electric field and electric potential.

Part - C

Generic 3 - Answer All Question

Discuss the basic properties of electric charges.

Discuss the source of electromagnetic wave.

Write the uses of Infrared radiation

Define atomic mass unit. Find its energy equivalent in MeV.

What are radioactive elements? What are the factors that affect radio activity?

Define ‘Electric field’ and discuss its various aspects.

Part - D

Generic 5 - Answer All Question

Explain in detail the Electrostatic Potential difference between the charges.

Define 'Electric field' and discuss its various aspects.

Discuss the various properties of conductors in electrostatic equilibrium.

Consider a parallel plate capacitor whose plates are closely spaced. Let R be the radius of the plates and the current in the wire connected to the plates is 5 A, calculate the displacement current through the surface passing between the plates by directly calculating the rate of change of flux of electric field through the surface.

Write short notes on (a) microwave (b) X-ray (c) radio waves (d) visible spectrum.

Explain the J.J. Thomson experiment to determine the specific charge of electron.

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12th Standard English Medium

12th Standard Tamil Medium

11th Standard English Medium

11th Standard Tamil Medium

10th Standard English Medium

9th Standard English Medium

8th Standard English Medium

7th Standard English Medium

Class XII

Class XI

12Th Standard

11Th Standard

10Th Standard

9Th Standard

12th Physics Model Exam -1

St. Britto Hr. Sec. School - Madurai

12th Physics Model Exam -1-Aug 2020

Part - A

Multiple Choice Question - Answer All Question

Which charge configuration produces a uniform electric field?

For continuous charge distributions, _____ methods can be used.

__________ is a very large unit of capacitance.

For continuous charge distributions, _____ methods can be used.

The dimension of \(\frac { 1 }{ { \mu }_{ 0 }{ \varepsilon }_{ 0 } } \) is

Which of the following electromagnetic waves has the highest frequency?

X-rays were discovered by ____.

The __________ and __________ potentials are called the critical potentials of an atom.

The variation of frequency of carrier wave with respect to the amplitude of the modulating signal is called ___________

The technology used for stopping the brain from processing pain is

Part - B

Generic 2 - Answer All Question

Define ‘Electric field’.

Explain the concept of intensity of electromagnetic waves.

Write the uses of Micro waves.

What is meant by radioactivity?

What is a reactor core?

Give the factors that are responsible for transmission impairments.

What does RADAR stand for?

Distinguish between Nanoscience and Nanotechnology.

Mention any two advantages and disadvantages of Robotics.

What are black holes?

Give the relation between electric field and electric potential.

Part - C

Generic 3 - Answer All Question

Discuss the basic properties of electric charges.

Discuss the source of electromagnetic wave.

Write the uses of Infrared radiation

Define atomic mass unit. Find its energy equivalent in MeV.

What are radioactive elements? What are the factors that affect radio activity?

Define ‘Electric field’ and discuss its various aspects.

Part - D

Generic 5 - Answer All Question

Explain in detail the Electrostatic Potential difference between the charges.

Define 'Electric field' and discuss its various aspects.

Discuss the various properties of conductors in electrostatic equilibrium.

Write short notes on (a) microwave (b) X-ray (c) radio waves (d) visible spectrum.

Explain the J.J. Thomson experiment to determine the specific charge of electron.

Obtain the law of radioactivity.

What is modulation? Explain the types of modulation with necessary diagrams.

What do you know about GPS? Write a few applications of GPS.

Elaborate any two types of Robots with relevant examples.

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The and potentials are called the critical potentials of an atom.