Which electromagnetic waves have the shortest wavelength?

Radio waves, X-ray waves, and microwaves are observed to be traveling in a vacuum. If the waves have a wavelength of 2 x 10^3 m 2 x 10^-9 m, 2 x 10^-1 m respectively, which of the three travels the fastest?

How does a decrease in the frequency affect the electromagnetic wave?

What color in the visible spectrum carries the lowest energy?

A certain FM radio station broadcasts at 90.5 MHz or 9.05 x 10^7 Hz. The radio wave travels at the speed of light, what is its wavelength?

What will happen to the frequency and wavelength if the energy of the waves decreases?

What electromagnetic wave has the highest energy?

How does a microwave oven work?

Which is NOT a negative effect of ultraviolet radiation?

Which type of electromagnetic waves cause sunburns?

What type of electromagnetic waves are used to cook food, predict the weather, and for communications?

Which is common between a microwave oven and RADAR?

What type of electromagnetic waves are used to take pictures of bones in Medicine?

What is the safety protocol for X-ray?

Which is NOT a probable result of the human tissue’s exposure to ionizing radiation?

How can we protect ourselves from harmful electromagnetic radiation?

What form of electromagnetic radiation has the most energy?

Which group of EM waves is considered as ionizing radiation?

What is the difference between ionizing and non-ionizing radiation?

Which is an example of a non-ionizing radiation?

Which group of EM waves is considered non-ionizing radiation?

Which of the following supports the laws of reflection?

I. The angle of incidence is equal to the angle of reflection.

II. The angle of incidence is greater than or less than the angle of reflection depending on the medium.

III. The incident ray, the normal line, and the reflected ray lie on the same plane.

IV. The incident ray, the normal line and the reflected ray lie on different planes

Which is true about the image formed in the plane mirror?

I. Real

II. Virtual

III. Upright

IV. Inverted

V. Same size

VI. Magnified

VII. Diminished

What image will be produced by a convex mirror?

Reflecting telescopes and microscopes produce an enlarged image of the object. Which is TRUE about these optical instruments?

What happens to the image formed in a compound microscope when the eyepiece lens is adjusted far from the focal point of the objective lens?

An enlarged image of a cell was flashed on a screen. Which optical set was able to produce the image?

Why do astronomers prefer to use a reflecting telescope in viewing astronomical objects?

Which shows the correct sequence of image formation in reflecting telescopes?

I. The light rays refract on the eyepiece producing an enlarged image.

II. Light from the distant object enters the telescope.

III. Light converges after hitting the parabolic mirror.

IV. A plane mirror catches and redirects the light.

How would you describe the image produced by a compound microscope?

Which instrument produces a virtual, larger, and upright image?

Which is/are TRUE about an electric motor?

I. It uses magnets to create a circular motion.

II. It uses magnets to create rotational motion.

III. It converts electrical energy into mechanical one.

IV. It depends on the interaction of magnetic and electric fields

Which part of an electric motor provides a magnetic field allowing the inner coil wire within to rotate as the electric current passes through?

Which part of an electric generator is induced voltage difference and converts direct current (DC) into an alternating one (AC)?

In which position an electric motor experiences a strong magnetic force?

Which statements are TRUE?

I. Magnetic force is the push or pull in a magnet.

II. Electric field is the region around an electric charge.

III. Magnetism is possible in a non-current carrying wire.

IV. Electric field is the push or pulls experienced by an object in an electric field

In which part of an electric motor is electric current supplied to create magnetic force?