×
19th Chapter

### 12th Class Physics Chapter 19 Test

Here you can prepare 12th Class Physics Chapter 19 Dawn of Modern Physics Test. Click the button for 100% free full practice test.

## 2nd Year Physics Chapter 19 Online MCQ Test for 12th Class Physics Chapter 19 (Dawn of Modern Physics)

This online test contains MCQs about following topics:

- Relative Motion
- Frames of Reference
- Special Theory of Relativity
- Interaction of Electromagnetic Radiation With Matter
- Annihilation of Matter
- Wave Nature of Particles
- Uncertainty Principle

Ics Part 2 Physics Chapter 19 Test

### 2nd Year Physics Chapter 19 Online MCQ Test for 12th Class Physics Chapter 19 (Dawn of Modern Physics)

1 The concept of direction is purely
• A. Relative
• B. Absolute
• C. Relative to the motion
• D. None of these
2 The photoelectric effect predicts that light is made of
• A. Photons
• B. Neutrons
• C. Protons
• D. None of these
3 Light of 4.5 eV is incident on a Cesium surface and stopping potential is 0.25 eV, maximum K.E. of emitted electron is.
• A. 4.5 eV
• B. 4.25 eV
• C. 4.75 eV
• D. 0.25 eV
4 Platinum wire becomes yellow at a temperature of.
• A. 900<sup> o</sup>C
• B. 1300<sup>o</sup>C
• C. 1600<sup>o</sup>C
• D. 500<sup>o</sup>C
5 A positron is an anti particle of.
• A. Proton
• B. Electron
• C. Neutron
• D. Photon
6 The dimensions of Plank's constant is same as that of.
• A. Energy
• B. Power
• C. Acceleration
• D. Angular momentum
7 The minimum frequency needed to emit an electron form metal surface is called:
• A. Work function
• B. Threshold frequency
• C. Quanta frequency
• D. All of above
8 The minimum energy required for occurrence of pair production is:
• A. 1.022eV
• B. 1.02keV
• C. 1.02Me.V
• D. 1.04MeV
9 The mass of an object will be doubled at speed.
• A. 2.6 x 10<sup>8</sup> m/s
• B. 1.6 x 10<sup>8 </sup>m/s
• C. 2.6 x 10<sup>7 </sup>m/s
• D. 3.6 x 10<sup>7</sup> m/s
10 If the energy of photon is 10 eV and work function is 5 eV, then the a value of stopping potential will be
• A. 50 V
• B. 2 V
• C. 5 V
• D. 15 V

### Top Scorers of Ics Part 2 Physics Chapter 8 Test Online

M

#### Mudasir Waseer

Lahore04 - Apr - 2024

17/17
01 Mins 08 Sec
H

#### Hamza Rahman

Lahore02 - Mar - 2024

17/17
02 Mins 48 Sec
B

Lahore01 - Apr - 2024

17/17
02 Mins 49 Sec
H

#### Hamza Rahman

Lahore02 - Mar - 2024

16/17
01 Mins 57 Sec
C

#### Crown Op

Lahore04 - Apr - 2024

16/17
02 Mins 01 Sec
S

#### Shiza Ayaz

Lahore05 - Mar - 2024

16/17
02 Mins 07 Sec
R

#### Rameen Fatima

Lahore26 - May - 2024

15/17
01 Mins 32 Sec
M

#### Mudasir Waseer

Lahore23 - Apr - 2024

15/17
02 Mins 05 Sec
S

Lahore04 - Mar - 2024

15/17
02 Mins 08 Sec
A

Lahore23 - Apr - 2024

15/17
02 Mins 21 Sec
H

#### Haris Abdullah

Lahore11 - Apr - 2024

15/17
02 Mins 26 Sec
A

Lahore23 - Apr - 2024

15/17
02 Mins 56 Sec
C

#### Crown Op

Lahore04 - Apr - 2024

15/17
03 Mins 23 Sec
M

#### Mudasir Waseer

Lahore04 - Apr - 2024

15/17
05 Mins 35 Sec
S

Lahore23 - Mar - 2024

14/17
01 Mins 35 Sec

Sort By:
X

to continue to ilmkidunya.com

Fill the form. Our admission consultants will call you with admission options.

X

to continue to ilmkidunya.com

X

to continue to ilmkidunya.com

X