Question

. In the experiment of reflection of sound answer the following questions:
(I) The most appropriate metal tubes one should choose for studying the reflection of sound should have
(a) diameter 8 cm
(b) diameter 5 cm
(c) diameter 4 cm (
d) diameter 2 cm
(II) A laboratory had the following apparatus available in it:
i. two thin tubes
ii. an intense and broad source of sound
iii. an intense and pointed source of sound
iv. a sharp pointer detector of sound
v. a plane metal sheet as reflector
vi. a thermocole reflector.
To verify the laws of reflection of sound successfully a student should choose
(a) (i), (iii), (iv), (v)
(b) (i), (iii), (iv), (ii)
(c) (i), (ii), (iv), (v) (
d) (i), (iii), (iv), (vi)
(III) A student, while verifying the laws of reflection of sound, measured the angle between the incident sound wave and reflected sound wave as 54°. The angle of reflection is
(a) 110°
(b) 55°
(c) 27°
(d) 45

Answer 1

Answer:

(I)

(a) diameter 8 cm

(II)

(a) (I),(iii),(iv),(v)

(III)

(b) 55°