Volume 1

The intensity of sound wave gets reduced by 20% on passing through a slab. The reduction in intensity on passing through two consecutive slabs is The intensity of sound wave gets reduced by 20% on passing through a slab. The reduction in intensity on passing through two consecutive slabs is November 6, 2020 Category: Arihant [...]

A sound source emits sound waves in a uniform medium. If energy density is E and maximum speed of the particles of the medium is vmax ​. The plot between E and vmax is best represented by : A sound source emits sound waves in a uniform medium. If energy density is E and maximum [...]

The correct graph between the frequency n and square root of density (ρ) of a wire, keeping its length, radius and tension constant, is is keeping its length radius and tension constant The correct graph between the frequency n and square root of density (ρ) of a wire November 6, 2020 Category: Arihant Physics by [...]

Figure shows the wave y=Asin(ω−kx). What is the magnitude of slope of the curve at B? Figure shows the wave y=Asin(ω−kx). What is the magnitude of slope of the curve at B? November 6, 2020 Category: Arihant Physics by D.C Pandey , Chapter 16 - Waves , Volume 1 ,

The diagram shows the propagation of a wave. Which points are in same phase ? The diagram shows the propagation of a wave. Which points are in same phase ? November 6, 2020 Category: Arihant Physics by D.C Pandey , Chapter 16 - Waves , Volume 1 ,

Two whistles A and B have frequencies 660 Hz and 590 Hz respectively. An observer is standing in the middle of line joining the two sources. Sources B and observer are moving towards right with velocity 30 m/s and A is standing to the left side. If the velocity of sound in air is 300 [...]

A whistle emitting a sound of frequency 440 Hz is tied to a string of length 1.5 m and rotated with an angular velocity of 20 rad/s in the horizontal plane. Then, the range of frequencies heard by an observer stationed at a large distance from the whistle will be : (V = 330 m/s) [...]

The rope shown at an instant is carrying a wave travelIing towards right created source vibrating at a frequency n. consider the following statement: The rope shown at an instant is carrying a wave travelIing towards right created source vibrating at a frequency n. consider the following statement: November 6, 2020 Category: Arihant Physics by [...]

Two cars are moving on two perpendicular roads towards a crossing with uniform speeds of 72 km/h and 36 km/h. If first car blows horn. of frequency 280 Hz, then the frequency of horn. heard by the driver of second car when line joining the car makes angle of 45 with the roads, will be [...]

An observer moves towards a stationary source of sound, with a velocity one-fifth of the velocity of sound. What is the percentage increase in the apparent frequency? An observer moves towards a stationary source of sound with a velocity one-fifth of the velocity of sound. What is the percentage increase in the apparent frequency? November [...]