Physics is one of the most fundamental scientific disciplines, and its main goal is to understand how the universe behaves. In this article, we want to focus on the top examination question and answer for first-year physics students
1.Q. What is a Geiger counter?
Ans. A Geiger counter is a device that detects the subatomic particles emitted by radioactive materials.
2.Q.The back of a spoon is what kind of mirror?
Ans. The back of a spoon is a convex mirror.
3.Q.What does thermodynamics study?
Ans. Thermodynamics is a branch of physics that studies temperature and heat, and energy,
4.Q What device is like the reverse of an electric motor?
Ans. A generator is essentially the reverse of an electric motor.
5.Q What does an insulator do?
Ans. An insulator prevents the transfer of thermal energy or electrical energy from one object to another.
6.Q What happens in a reduction half-reaction?
Ans. The reduction half-reaction is where electrons are being gained from the material being oxidized.
7.Q How can you identify a fixed pulley?
Ans. A pulley is made up of a wheel and a rope. The rope is wrapped around a groove in the outer edge of the wheel so that you can pull on one end of the rope to raise up something attached to the other end.
8.Q What is a type of energy?
Ans. Energy is of three main types:
- Potential Energy – The energy possessed by a body at rest.
- Kinetic Energy – The energy possessed by a body in motion.
- Rotational Energy – The energy possessed by a rotating body.
9.Q Plutonium-239 alpha decay yields
Ans. Plutonium-239 alpha decay yields uranium-235.
The decay equation looks like:
10.Q Objects falling through air experience a type of friction called
Ans. Objects falling through air experience a type of friction called air resistance or drag.
11.Q What is an inclined plane that moves called?
Ans. An inclined plane that moves is called a wedge.
12.Q How many AU in a light year?
Ans. There are approximately 63,242 astronomical units in one light year.
13.Q In which country did the Chernobyl nuclear disaster take place?
Ans. When the Chernobyl nuclear disaster took place in 1986, the power plant was located in the Soviet Union.
14.Q What is an instrument that separates light into various wavelengths?
Ans. A spectroscope is an instrument that separates light into light into various wavelengths.
15.Q What color has the highest frequency?
Ans. The color that has the highest frequency is violet.