GENERAL SCIENCE (GENERAL STUDIES) Part-2Total Questions: 5011. The unit to measure intensity of sound is(a) decibel(b) joule(c) candulla(d) none of theseCorrect Answer: (a) decibel12. Echo is a type of(a) reflected sound(b) refracted sound(c) polarised sound(d) none of theseCorrect Answer: (a) reflected sound13. Sound cannot travel though –(a) solids(b) liquids(c) gases(d) vacuumCorrect Answer: (d) vacuum14. One hertz is equivalent to –(a) one cycle per second(b) one second(c) one meter per second(d) one second per meterCorrect Answer: (a) one cycle per second15. The unit of frequency of sound is(a) metre/second(b) metre/second(c) hertz(d) none of theseCorrect Answer: (c) hertz16. Speed of sound at constant temperature depends on –(a) Pressure(b) Density of gas(c) both (a) & (b)(d) None of the aboveCorrect Answer: (d) None of the above17. The waves in which the particles of the medium vibrate in a direction perpendicular to the direction of wave motion is known as –(a) Transverse wave(b) Longitudinal waves(c) Propagated waves(d) None of theseCorrect Answer: (a) Transverse wave18. Ultrasonic waves have frequency –(a) below 20 Hz(b) between 20 and 20,000 Hz(c) only above 20,000 Hz(d) only above 20,000 MHzCorrect Answer: (c) only above 20,000 Hz19. To hear a distinct echo, the minimum distance of a reflecting surface should be :(a) 17 metres(b) 34 metres(c) 68 metres(d) 340 metresCorrect Answer: (a) 17 metres20. In a long spring which of the following type of waves can be generated –(a) Longitudinal only(b) Transverse only(c) Both longitudinal and transverse(d) Electromagnetic onlyCorrect Answer: (c) Both longitudinal and transverseSubmit Quiz« Previous12345Next »
