0.4 s 0.8 s 1.5 s. 2.5 s. 2. A beam of light from a ray box spreads out as shown in the diagram and strikes a plane mirror.
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1 1. ship is fitted with echo-sounding equipment. pulse of sound is sent downwards from the ship at a speed of 1500 m/s. The seabed is 600m below the ship. How long will it take the pulse of sound to return to the ship? 3. n object is placed in front of a converging lens. The diagrams all show two rays of light from the object, and the image produced. In which diagram are the rays drawn correctly? 0.4 s 0.8 s 1.25 s 1.5 s 2.5 s 2. beam of light from a ray box spreads out as shown in the diagram and strikes a plane mirror. How will the rays at the edges of this beam be reflected? 4. Four members of the electromagnetic spectrum are infrared, ultraviolet, microwaves and X-rays. Which of the following gives these four in order of increasing wavelength? Microwaves, infrared, ultraviolet, X-rays X-rays, ultraviolet, infrared microwaves Ultraviolet, infrared, microwaves, X-rays infrared, ultraviolet, X-rays, microwaves X-rays, microwaves, ultraviolet, infrared
2 5. ray of light passes through a glass block as shown below. 7. Which of the following diagrams shows the focusing of rays of light from a distant object by the eye of a long-sighted person? Which line correctly shows the angle of incidence in the glass and the corresponding angle of refraction? 6. student makes the following statements about members of the electromagnetic spectrum. I Gamma rays have a longer wavelength than X-rays. II Ultraviolet rays have a longer wavelength than infrared rays. III TV and radio waves have a longer wavelength than microwaves. Which of the statements is/are correct? I only II only III only I and II only II and III only 8. The diagram shows part of the electromagnetic spectrum. The radiation in the region marked Z is called ultraviolet infrared X-rays sound gamma rays.
3 9. Which of the following waves is a longitudinal wave? 12. water wave is shown below. Microwaves Radio waves Sound waves Light waves Water waves 10. The following diagram gives information about a wave. The speed of the wave is 2.0 m/s. The frequency of the wave is 0.2 Hz 0.4 Hz 2.5 Hz 10 Hz 20 Hz. Which line in the table below correctly shows the amplitude and wavelength of the wave? 13. n object is placed 10 cm from a converging lens of focal length 15 cm. The image formed by the lens is 11. ray of light passes from air into glass as shown. Which letter marks the angle of refraction? inverted and the same size as the object inverted and smaller than the object inverted and larger than the object upright and smaller than the object upright and larger than the object.
4 14. ray of light strikes a plane mirror at an angle of 40 to the mirror surface. Which row shows the correct values of angle of incidence and angle of reflection for this ray? 17. In a water tank, 10 waves pass a point in 2 seconds. The speed of the waves is 04m/s. The wavelength of the waves is 0.005m 0.02m 0.04m 0.08m 2m. 18. Sound is a longitudinal wave. When a sound wave travels through air the particles of air move continuously away from the source move continuously towards the source vibrate at random vibrate at 90º to the wave direction vibrate along the wave direction. 19. The diagram shows part of the electromagnetic spectrum. 15. student places an object 250 mm from a converging lens of focal length of 100 mm. The radiations in regions P and Q are The image formed by the lens is inverted and the same size as the object inverted and smaller than the object inverted and larger than the object upright and smaller than the object upright and larger than the object. 16. Which of the following is a longitudinal wave? Water wave Radio wave Gamma ray Sound wave Light wave
5 20. The diagram shows a ray of light incident on the centre of the straight edge of a semicircular glass block. 21. The diagram shows a transverse wave. Which diagram shows the path of the ray through the block? The amplitude of the wave is 2 m 3 m 4 m 6 m 8 m. 22. The diagram shows a girl standing at a fireworks display. There is a tall building nearby. When a firework explodes, the girl hears two bangs 0.5 s apart. The speed of sound is 340 m/s. How far is the girl from the building? 42.5 m 85.0 m 170 m 340 m 680 m
6 23. The diagrams show a light ray passing through a semi-circular glass block. In each case one angle has been marked. In which diagram is this angle the critical angle? 24. beam of light has a wavelength of 480x10-7 m in air. The frequency of this light is 1.60x10-15 Hz 2.40x10-15 Hz 7.08x10 8 Hz 4.17x10 14 Hz 6.25x10 14 Hz. 25. Which of the following statements is/are correct? I long sighted person cannot focus sharply on near objects. II In a short sighted person's eye, rays from a distant object focus behind the retina. III s lens power increases, the focal length decreases. I only I and II only I and III only II and III only I, II and III 26. student is asked to write down some types of electromagnetic waves in order of increasing wavelength. The student's answer is not correct. Which two of these should be exchanged to make the student's answer correct? X-rays and infrared Visible light and infrared Infrared and ultraviolet Infrared and microwaves X-rays and microwaves
7 27. The diagram below shows a ray of red light entering a block of perspex. 28. The diagram shows two rays of light incident on a curved reflector. The focal point, F, of the reflector is shown. The angle θ is greater than the critical angle in the perspex for this light. Which of the following diagrams shows the path of the ray of red light after striking the straight surface of the perspex block? Which of the following diagrams shows the paths of the rays of light after reflection?
8 29. The following diagram shows a wave. 32. ray of light passes from air into a glass block as shown. Which row in the table gives the wavelength and amplitude of the wave? Which row in the table shows the angle of incidence and the angle of refraction? 30. Which of the following is an example of a longitudinal wave? Light wave Infra-red wave Radio wave Sound wave Water wave 31. converging lens has a focal length of 50 mm The power of the lens is student wears glasses fitted with concave lenses. Which of the following statements is/are correct? I The student is short sighted. II oncave lenses are converging lenses. III The glasses help the student to see near objects clearly. I only II only III only I and II only I, II and III
9 34. The diagram shows a list of the members of the electromagnetic spectrum in order of increasing wavelength. 36. The diagram shows what happens to a ray of light when it strikes a glass block. Which row in the table shows the radiation represented by the letters P, Q and R? Which row in the table identifies the angle of incidence and the angle of refraction? 35. The diagram shows members of the electromagnetic spectrum in order of increasing wavelength. 37. n object is placed in front of a converging lens as shown. The position of the image formed by the lens is also shown. Which row in the table identifies the radiations represented by the letters P, Q and R? The focal length of the lens is 100 mm. The distance between the lens and the object is 50 mm 100 mm 150 mm 200 mm 250 mm.
10 38. The diagram gives information about a wave. The time taken for the waves to travel 108m is 0.5 s. student makes the following statements about the waves. I The wavelength of the waves is 27m. II The amplitude of the waves is 20m. III The frequency of the waves is 8 Hz. Which of the statements is/are correct? I only II only I and III only II and III only I, II and II
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