The correct answer is (C) : Oval window.
The correct answer is: (C) Oval window.
The ear drum (tympanic membrane) vibrates when sound waves hit it. These vibrations are then transmitted through three small bones in the middle ear called the ear ossicles. The ear ossicles include the malleus (hammer), incus (anvil), and stapes (stirrup). They amplify and transfer the vibrations to the next structure in the ear.
The final ossicle, the stapes, is connected to the oval window, which is a membrane-covered opening to the inner ear. When the stapes vibrates against the oval window, it creates pressure waves in the fluid-filled cochlea of the inner ear, initiating the process of hearing.
Thus, the vibrations from the ear drum are transmitted through the ear ossicles to the oval window.
Column I | Column II | ||
A | Gutturi | I | Into the left ear |
B | In oculum sinistram | II | Into the right eye |
C | In aurem sinistram | III | For the left eye |
D | In oculum dextrum | IV | To the throat |
A block of certain mass is placed on a rough floor. The coefficients of static and kinetic friction between the block and the floor are 0.4 and 0.25 respectively. A constant horizontal force \( F = 20 \, \text{N} \) acts on it so that the velocity of the block varies with time according to the following graph. The mass of the block is nearly (Take \( g = 10 \, \text{m/s}^2 \)):
A wooden block of mass M lies on a rough floor. Another wooden block of the same mass is hanging from the point O through strings as shown in the figure. To achieve equilibrium, the coefficient of static friction between the block on the floor and the floor itself is
The circuit shown in the figure contains two ideal diodes \( D_1 \) and \( D_2 \). If a cell of emf 3V and negligible internal resistance is connected as shown, then the current through \( 70 \, \Omega \) resistance (in amperes) is: