PHY101 Quiz Dec 2025

VU QUIZ REPORT

Subject: PHY101

Quiz Completed: 30/12/2025, 13:49:28 Total Questions: 10 Mathematical Questions: 1 CROPPED Screenshots: 1

According to Coulomb's law, as the distance between two charges increases:

A. The force decreases

B. The force becomes zero C. The force remains constant D. The force increases

The number of turns becomes double, but length remain same, then magnetic field in the solenoid become A. Zero

B. Double

C. Remain same D. Half

How does a refrigerator differ from a heat engine in terms of its operation?

1. A refrigerator only absorbs heat.
2. A refrigerator operates at a single temperature.
3. A refrigerator is always 100% efficient.
4. A refrigerator is a heat engine working in reverse.

Correct answer: A refrigerator is a heat engine working in reverse.

Selected Answer: D

Why do individuals with hypermetropia have difficulty seeing nearby objects clearly?

1. Eyes have a perfect focal length
2. Eyes focus light in front of the retina
3. Eyes focus light behind the retina
4. Eyes can't detect light wavelengths

Correct answer: Eyes focus light behind the retina

A certain electromagnetic wave has a frequency of 6×1014 Hz. What is the wavelength of this wave?

1. 600 meters

�B�.� �5��1�0"�7� �m�e�t�e�r�s

C. 300 nanometers �D�.� �6��1�0"�7� �m�e�t�e�r�s

Electric energy is measured:

A. Kilowatt hour

B. Horsepower C. Kilowatt D. Watt

In meta stable state, electrons reside: A. 10-13 sec B. 10-5 sec

C. 10-3 sec

D. 10-8 sec

You selected: C

Mathematical question (CROPPED screenshot - top 20% removed)

According to the first law of thermodynamics, applied to a gas, the increase in the internal energy during any process: A. Equals the heat input minus the work done on the gas

B. Equals the heat input plus the work done on the gas

C. Is independent of the work done on the gas D. Equals the work done on the gas minus the heat input

The relation for converting the temperature scale from Celsius to Fahrenheit is:

A. TF=95×TC+32" role="presentation">TF=95×TC+32TF=95×TC+32T_F = {9\over5} × T_C +32

�B�.� �T�F�=�T�C"�2�7�3�.�1�5�"� �r�o�l�e�=�"�p�r�e�s�e�n�t�a�t�i�o�n�"�>�T�F�=�T�C"�2�7�3�.�1�5�T�F�=�T�C"�2�7�3�.�1�5�T�_�F� �=� �T �C�.� �T�C�=�5�9��(�T�F"�3�2�)�"� �r�o�l�e�=�"�p�r�e�s�e�n�t�a�t�i�o�n�"�>�T�C�=�5�9��(�T�F"�3�2�)�T�C�=�5�9��(�T�F"�3�2�)�T�_�C� D. TC=TF+273.15" role="presentation">TC=TF+273.15TC=TF+273.15T_C = T_F + 273.15