Physics Sound

Physics Sound
Q-1 What is wavelength of ultrasonic wave in air?
(a) 1/100m
(b) 1/200m
(c) 1/300m
(d) None
Q-2 A wave is represented by…….
(a) Y= (wt + b)
(b) y = w2t + t
(c) y = A Sin (Ct - d x + e)
(d) None
Q-3 Which of the following is a form of energy?
(a) Sound
(b) Sand
(c) A & B
(d) None
Q-4 Which of the following travel as a wave?
(a) Sound
(b) Sand
(c) Coal
(d) None
Q-5 Why we can’t hear the sound of explosion and moon?
(a) For sound wave we have medium
(b) Sound wave have energy
(c) A & b
(d) None
Q-6 At moon there in no………for propagation?
(a) Medium
(b) Oxygen
(c) Hydrogen
(d) None
Q-7 On the surface of moon, why astronaut cannot hear the sound of other
astronaut?
(a) Because of loch of medium
(b) Because of presence of medium
(c) a & b
(d) None
Q-8 Which quantity is not changed during transmission from are place to anata?
(a) Frequency
(b) Velocity
(c) Accleration
(d) None
Q-9 In air what is veloiry of sound?
(a) 335 m/sec
(b) 330m/sec
(c)235 m/sed
(d) None
Q-10 Verify of sound……if temperature of gas increases?
(a) Decrease
(b) Increase
(c) Remain Saul
(d) None
Q-11 Steel rod have…….velocity of sound?
(a) Minimum
(b) Maximum
(c) O
(d) None
Q-12 What is nature of light wave?
(a) Transverse
(b) Longitudinal
(c) Transverse & longitudinal
(d) None
Q-13 If pressure of a liguid increases what happen to velocity of sound?
(a) Decrease
(b) Increase
(c) A & b
(d) None
Q-14 sound waves are ----------------.
(a) Transverse in nature
(b) Longitudinal in nature
(c) a & b
(d) None
Q-15 V =?
(a) T
(b) T1/3
(C) T2
(d) ÖT
Q-16 In V= ÖT, T in
(a) Absolute Temp
(b) Tessa
(c) Tesla
(d) None
Q-17 If a person cannot hear then it is---------------.
(a) Infrasonic Wave
(b) Ultrasonic Wave
(c) Audible Wave
(d) None
Q-18 Which of the following is unit of frequency?
(a) H2
(b) N
(c) T
(d) None
Q-19 (Speed of a body /Speed of sound) =.
(A) Reynold No.
(b) Mach number
(c) Poisson ratio
(d) None
Q-20 In Iron velocity of sound will be ………
(a) Minimum
(b) Max
(c) O
(d) None
Q-21 Kund`t tube is used to detect ….
(a) Infrasonic wave
(b) Ultrasonic wave
(c) a & b
(d) None
Q-22 Stationary wave does not carry……..
(a) Energy
(b) Heat
(c) a & b
(d) None
Q-23 why we can’t polarize sound?
(a) Due to longitudinal nature
(b) Due to transverse nature
(c) Due to frequency
(d) None
Q-24 V in inverses proportional to
(a) Ö m
(b) m
(c) M2
(d) None
Q-25 V =Ö/?
(a) V2
(b) M
(c) M2
(d) None

Answers:-
1(a) 1/100m
2(c) y = A sin (C + -d ´ + e)
3(a) Sound
4(a) Sound
5(a) For sound wave we have medium
6(a) Medium
7 (a) Because of loch of medium
8 (a) Frequency
9 (b) 330m/sec
10(b) Increase
11(b) Maximum
12(a) Transverse
13(b) Increase
14 (a) Transverse in nature
15(d) ÖT
16(a) Absolute Temp
17(b) Ultrasonic Wave
18(a) H2
19(b) Mach number
20(b) Max
21(b) Ultrasonic wave
22(a) Energy
23(a) Due to longitudinal nature
24(a) Ö m
25(b) M