Intensity Problems In Physics -Multiple Choice Questions Quiz

Interactive MCQs on “Intensity Problems In Physics”:

Solve the following 10 questions. Only one option is correct. Click on the “Submit” button when done. Click on the “embed” button to use this quiz on your website. Click on “WhatsApp” to share this quiz.

Question 1: Which of the following quantities is directly proportional to the intensity of a wave?

(a) Amplitude
(b) Wavelength
(c) Frequency
(d) Speed

Question 2: A sound wave with an intensity of 50 W/m² is increased to an intensity of 200 W/m². By what factor does the sound wave's amplitude change?

(a) 2
(b) 4
(c) 8
(d) 16

Question 3: The intensity of light decreases as it travels through a medium because:

(a) The speed of light increases
(b) The speed of light decreases
(c) Light is absorbed by the medium
(d) The wavelength increases

Question 4: The intensity of an electromagnetic wave is halved. What is the corresponding change in its amplitude?

(a) The amplitude remains the same
(b) The amplitude is halved
(c) The amplitude is doubled
(d) The amplitude is quadrupled

Question 5: In a double-slit interference experiment, if the intensity of light is increased, what will happen to the fringes' visibility?

(a) Fringes will become less visible
(b) Fringes will become more visible
(c) Fringes will disappear
(d) Fringes will shift horizontally

Question 6: The intensity of a light wave is 24 W/m² at a distance of 3 meters from the source. What will be the intensity at a distance of 6 meters from the source assuming no energy losses?

(a) 3 W/m²
(b) 6 W/m²
(c) 8 W/m²
(d) 12 W/m²

Question 7: The intensity level of a sound wave increases by 20 decibels. By what factor does the intensity increase?

(a) 2
(b) 4
(c) 10
(d) 100

Question 8: The intensity of an electromagnetic wave is 2 W/m². What is the amplitude of the wave?

(a) 1 V/m
(b) 2 V/m
(c) 1√2 V/m
(d) 2√2 V/m

Question 9: A light wave has an intensity of 12 W/m². What is the energy passing through an area of 3 m² in 4 seconds?

(a) 18 J
(b) 48 J
(c) 144 J
(d) 576 J

Question 10: Which of the following is a scalar quantity related to the intensity of a wave?

(a) Intensity level
(b) Amplitude
(c) Frequency
(d) Wavelength