Waves

What is the definition of wavelength?

• • Distance between two consecutive crests or troughs of a wave

• Highest point of a wave

• Time taken for one complete wave cycle

• Number of wave cycles per second

What is the resting point in a wave?

• The highest point of a wave

• The lowest point of a wave

• The position of particles when there's no disturbance

• The point where waves combine to produce larger amplitude

Which type of wave requires a medium to propagate

• Transverse wave

• Longitudinal wave

• Electromagnetic wave

• Mechanical wave

What is refraction?

• Bouncing back of a wave when it encounters a boundary

• Bending of a wave around obstacles or through openings

• Bending of a wave as it passes from one medium to another

• Combination of waves to produce a larger amplitude

Which unit is used to measure frequency?

• Newton

• Joule

• Hertz

• Pascal

What is a real image?

• Image formed by diverging light rays

• Image formed by converging light rays that can be projected

• Image formed by bouncing back of a wave

• Image formed by destructive interference of waves

What does a convex lens do to light rays?

• It converges them

• It diverges them

• It absorbs them

• It reflects them

What is the frequency of a wave with a period of 0.1 seconds?

• 0.1 Hz

• 10 Hz

• 1 Hz

• 100 Hz

What is the electromagnetic spectrum?

• Range of all possible frequencies of electromagnetic radiation

• What is the electromagnetic spectrum?

• • C) Range of frequencies below 20 Hz

• Range of frequencies above 20 kHz

What happens when waves undergo destructive interference?

• They combine to produce a larger amplitude

• They combine to produce a smaller amplitude

• They reflect off boundaries

• They diffract around obstacles