physics bowl

Question 1

What type of wave is used in microwave ovens?

Answer 1

Microwaves

Question 2

What is the longest wavelength visible to the human eye?

Answer 2

700 nm (Red light)

Question 3

What type of wave is light?

Answer 3

Electromagnetic wave / Transverse wave

Question 4

What is the relationship between the frequency and wavelength of a wave?

Answer 4

As frequency increases, wavelength decreases.

Question 5

Which scientist discovered the photoelectric effect?

Answer 5

Albert Einstein

Question 6

What is the formula for calculating kinetic energy?

Answer 6

KE = ½ mv²

Question 7

What type of electromagnetic wave has the highest frequency?

Answer 7

Gamma rays

Question 8

What wave property is responsible for the color of light?

Answer 8

Wavelength

Question 9

Which electromagnetic wave is used for Wi-Fi and Bluetooth?

Answer 9

Radio waves

Question 10

What type of wave is sound?

Answer 10

Longitudinal wave

Question 11

Which type of electromagnetic radiation has the longest wavelength?

Answer 11

Radio waves

Question 12

What wave type is used for medical imaging to view bones inside the body?

Answer 12

X-rays

Question 13

Which wave is used for television broadcasts?

Answer 13

Radio waves

Question 14

What does the Doppler Effect describe?

Answer 14

The change in frequency or wavelength of a wave as the source or observer moves.

Question 15

What is the SI unit for frequency?

Answer 15

Hertz (Hz)

Question 16

What is the formula for Ohm’s Law?

Answer 16

V = IR (Voltage = Current × Resistance)

Question 17

What is the effect of increasing temperature on the resistance of a metal wire?

Answer 17

The resistance increases as temperature increases.

Question 18

What kind of wave is used to treat cancer with radiation therapy?

Answer 18

Gamma rays

Question 19

What kind of wave is used for remote control signals?

Answer 19

Infrared waves

Question 20

What does the Law of Reflection state?

Answer 20

The angle of incidence equals the angle of reflection.

Question 21

What happens to the wavelength of light when it enters a denser medium?

Answer 21

The wavelength decreases.

Question 22

What is the speed of light in a vacuum?

Answer 22

299,792,458 m/s

Question 23

What type of wave is used for the transmission of television signals?

Answer 23

Radio waves

Question 24

Which electromagnetic wave is used in night vision technology?

Answer 24

Infrared waves

Question 25

What type of electromagnetic wave has a wavelength longer than visible light but shorter than radio waves?

Answer 25

Microwaves

Question 26

What happens to the wavelength of a wave as its frequency increases?

Answer 26

The wavelength decreases.

Question 27

What is the formula for calculating the energy of a photon?

Answer 27

E = hf

Question 28

What is the type of wave that causes seismic waves?

Answer 28

Mechanical waves (both longitudinal and transverse)

Question 29

What is the relationship between the wavelength and frequency of electromagnetic waves in a vacuum?

Answer 29

c = λf (speed of light = wavelength × frequency)

Question 30

What type of wave does not require a medium to travel?

Answer 30

Electromagnetic waves (e.g., light)

Question 31

What is the principle that states that energy is neither created nor destroyed?

Answer 31

Law of Conservation of Energy

Question 32

What happens to the frequency of a wave when the source of the wave moves away from the observer?

Answer 32

The frequency decreases (Doppler Effect)

Question 33

What kind of radiation causes sunburn?

Answer 33

Ultraviolet radiation (UV)

Question 34

Which wave has the highest energy among the electromagnetic spectrum?

Answer 34

Gamma rays

Question 35

What phenomenon explains why the sky appears blue?

Answer 35

Rayleigh scattering

Question 36

What is the principle that explains the bending of light at a boundary between two media?

Answer 36

Refraction

Question 37

What does the formula v = λf represent?

Answer 37

Wave speed = wavelength × frequency

Question 38

What kind of wave is used in dental X-rays?

Answer 38

X-rays

Question 39

What is the wave property responsible for diffraction?

Answer 39

Wavelength

Question 40

What is the formula for calculating the force exerted by an object?

Answer 40

F = ma (Force = mass × acceleration)

Question 41

What is the phenomenon where a wave changes direction as it passes through an opening or around an obstacle?

Answer 41

Diffraction

Question 42

The temperature of an object is the measure of :

Answer 42

The average energy of the particles