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10th Physics Notes Chapter 1 - Questions
1. Define vibratory movement. Give situation of vibratory movement.
Ans The backward and forward movement of a frame around its suggested role is referred to as a vibratory movement, and the particle of the medium does now no longer extrude their region. These are a few situations for vibratory movement. The movement is beneath neath the motion of a few restoring pressure Vibratory movement repeats itself after normal durations of time it satisfies regulation of conservation of power.
2. Define easy hairdo approximately its suggested role movement.
Ans The acceleration of the frame executing S.HM is at once proportional to the displacement from the suggested role and constantly directed closer to the suggested role 3. Write the houses of easy harmonic movement.
Ans. i) A-frame constantly vibrate approximately its suggested role
Acceleration is constantly directed closer to suggest role.
The Acceleration is at once proportional To the displacement and as an average role and a is most t severe role. TV Is most at guy role and the prison
4. What is supposed with the aid of using a period?
Ans. Time required to finish cone mound a to is referred to as the period
5. What are mechanical waves?
Ans. The waves which require a few mediums for or their propagation are referred to as mechanical waves, For instance, sound Waves water string waves
7. Define crest and trough of a wave
Ans. Crest The factor at which particle of a medium an above the regular role
Trough: The factor at which particles of the medium are under the regular role.
8. What is the frequency? Write its unit.
Ans. The wide variety of waves passing thru a factor in a single 2nd is referred to as frequency. It's unit 10. is a cycle in line with Sec. Hertz (Hz) or vib/sec.
9. Define Hooke's regulation.
Ans. The pressure carried out at the spring at once is proportional to the growth in duration is referred to as 13. Hooke's regulation i.r. De 0X
10. What is supposed with the aid of using amplitude?
Ans. The most displacement from suggests role to severe role during vibratory 16. movement is referred to as amplitude.
11. What are electromagnetic waves? Give examples
Ans. The waves which do now no longer require any medium for their propagation are referred to as electromagnetic waves Example is radio waves. Heat. Television waves
12. Define compressional waves.
Ans. The waves wherein debris of the medium vibrate parallel to the path of propagation 22. of waves are referred to as compressional waves.
13. What is mirrored image?
Ans. The bouncing return of water waves after taking the load is referred to as the mirrored image of waves and additionally obeys the legal guidelines of a mirrored image of mild.
14. Define refraction.
Ans. When a ray of mild caters from one obvious medium to some other obvious medium it bends far from its route the bending of waves from the incident route is referred to as refraction.
15. Define diffraction.
Ans. The bending of waves across the nook or hurdles is referred to as diffraction.
16. What is supposed with the aid of using interference?
Ans. When the debris of the medium is subjected to 2 waves concurrently the phenomenon takes region is referred to as interference.
17. Define positive interference.
Ans The interference wherein crest of 1 wave fall at the crest of different waves or trough of one fall at the trough of a different wave. This is referred to as positive interference.
18. What is supposed with the aid of using damaging interference?
Ans. The phenomenon wherein the crest of 1 wave falls at the trough of the different wave, cancel every different impact and as an end result floor of the medium stays undisturbed is referred to as damaging interference.
19. Define desk-bound waves.
Ans. When the same waves by skip thru a medium alongside the identical line on the contrary path then desk-bound waves are produced at positive Frequency.
20. Give an instance, which provides an explanation for that power is transferred thru waves.
Ans. An example of such waves is sound waves i.e. sound power is transferred from one medium to some other medium withinside the shape of waves.
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