| Stationary Waves Questions: Paper - 02 | More Physics Questions | ||
1. |
As an empty vessel is filled with water, its frequency (MNR 88) (a) Increases (b) Decreases (c) Remains the same (d) None of above Answer: (a) |
2. |
A sonometer wire vibrates with a frequency n. it is replaced by another wire of three times the diameter. If tension and other parameters remain the same, the frequency of vibration of the wire will be (CPMT 85) (a) 9 n (b) 3 n (c) (d) Answer: (c) |
3. |
Two closed pipe produces 10 beats per second when emitting their fundamental nodes. If their lengths are in the ratio of 25: 26 their fundamental frequency in Hz are (MHT CET 2002) (a) 270, 280 (b) 260, 270 (c) 260, 250 (d) 240, 250 Answer: (c) |
4. |
Four wires of identical lengths, diameters and material and stretched on a sonometer box. The ratio of their tension is 1: 4: 9: 16. the ratio of their fundamental frequencies is (CPMT 89) (a) 1: 6: 9: 16 (b) 4: 3: 2: 1 (c) 1: 2: 3: 4 (d) 1: 4: 9: 16 Answer: (c) |
5. |
If the fifth overtone of a closed pipe is in unison with the fifth overtone of an open pipe, then the ratio of the length of closed pipe to open pipe will be (a) 11:12 (b) 12:11 (c) 13:11 (d) 11:13 Answer: (a) |
6. |
Energy is to be carried from one place to another. Which one o the following cannot be used? (a) Longitudinal progressive waves (b) Transverse progressive waves (c) Electromagnetic waves (d) Standing (stationary) waves Answer: (d) |
7. |
In stationary waves (A.F.M.C PUNE 88,92) (a) Energy is uniformly distributed (b) Energy is minimum at nodes and maximum at antinodes (c) Energy is maximum at nodes and minimum at antinodes (d) None of these Answer: (b) |
8. |
Two identical straight wires are stretched so as to produce 6 beats per second when tension slightly in one of them, the beat frequency remains unchanged. Denoting by T1 and T2 the higher and lower initial tension in the strings, then it could be said that while making the above changes in tension (I.I.T. 91) (a) T2 was decreased (b) T2 was increased (c) T1 was decreased (d) Both (b) and (c) Answer: (d) |
9. |
String is in fundamental mode of vibration then velocity is directly proportional to _______ (MHT CET 2003) (a) Square root of tension (b) Square root of length (c) Square of tension (d) Square root of linear density Answer: (a) |
10. |
Standing waves
are produced by the superposition of two waves given by y1 = 0.4 sin 2p y2 = 0.4 sin 2p (a) 0.2 m (b) 0.3 m (c) 0.4 m (d) 0.5 m Answer: (c) |
11. |
The end correction of a resonance column is 1.0 cm. if the shortest length resonating with a tuning fork is 15.0 cm, the next resonating length is (PMT, MP 85) (a) 31 cm (b) 45 cm (c) 46 cm (d) 47 cm Answer: (d) |
12. |
Two sound waves of relative intensities 400: 1 show interference. The ratio of intensity at the maxima to minima is close to (C.P.M.T-89) (a) (b) (c) (d) Answer: (a) |
13. |
A wave is propagating along X-axis and another identical wave is propagating along Y-axis if they superimpose each other, the resultant wave will be (PMT 92 CPMT 93) (a) Circular (b) Parabolic (c) Straight line (d) Elliptical Answer: (c) |
14. |
A string is vibrating in first overtone then point formed exactly at the middle is (MHT CET 2006) (a) Node (b) Antinodes (c) Sometimes node and sometimes antinodes (d) None of these Answer: (a) |
15. |
Transverse waves are generated in two uniform wires A And B of same material by attaching their free ands to a vibrating source of frequency 200 Hz. The cross sectional area A is half than of B. while the tension on A is twice that on B. the ratio of the wavelength of the transverse wave in A and B is (NCERT 84) (a) (b) (c) 1: 2 (d) 2: 1 Answer: (d) |
16. |
In Meld’s experiment, 6 loops were formed, when the string was stretched by a weight 6 gram. What weight should be used to produce 3 loops, without changing the experiment set up? (a) 12 gram wt. (b) 18 gram wt. (c) 24 gram wt. (d) 16 gram wt. Answer: (c) |
17. |
For the stationary wave y = 4 sin (a) 7.5 cm (b) 15 cm (c) 22.5 cm (d) 30 cm Answer: (a) |
18. |
The ratio between the amplitudes of two superposing waves is 3: 2. the ratio between the maximum and minimum intensities of the resultant wave will be (C.P.M.T-90) (a) 9: 4 (b) 25: 1 (c) 13: 5 (d) 5: 1 Answer: (b) |
19. |
Two stretched wires of same material of lengths l and 2 l vibrate with frequencies 100 and 150 Hz respectively. The ratio of their tension is (PMT MP 90) (a) 2: 3 (b) 3: 2 (c) 1: 9 (d) 1: 3 Answer: (c) |
20. |
An open pipe is suddenly closed with the result that, the second overtone on the closed pipe is found to be higher in frequency by 100 Hz, then the first overtone of the original pipe. the fundamental frequency of open pipe will be (CPMT 92) (a) 100 Hz (b) 300 Hz (c) 150 Hz (d) 200 Hz Answer: (d) |
21. |
A glass tube of 1.0 m length is filled with water. The water can be drained out slowly at the bottom of the tube. If a vibrating tuning fork of frequency 500 Hz is brought at the upper end of the tube and the velocity of sound is 330 m/s, then the total number of resonance obtained will be (M.N.R-94) (a) 4 (b) 3 (c) 2 (d) 1 Answer: (b) |
22. |
The speed of sound in air is 350 meter per second. The fundamental frequency of an open pipe 50 cm long will be (CPMT 93) (a) 175 Hz (b) 350 Hz (c) 700 Hz (d) 50 Hz Answer: (b) |
23. |
The equation of stationary wave in stretched string is given by y = 5 sin (a) 1.5 cm (b) 3 cm (c) 6 cm (d) 4 cm Answer: (b) |
24. |
A sonometer wire of density d and radius a is held between two bridges at a distance L apart. The wire has a tension T. the fundamental frequency of the wire will be (CPMT 76) (a) (b) (c) (d) Answer: (b) |
25. |
The frequencies of the harmonics of the string are (CPMT 88) (a) Unrelated (b) Of the same pitch (c) In the ratio 1: 2: 3 (d) In the ratio 1: 3: 5 Answer: (a) |
and 
where
all the quantities are expressed in SI units. What is the amplitude of a
particle at x 
cos (96 
cos 40 
