my quiz Quiz

Question Number 1 density of water? A. 920 kg/m[cube] B. 1260 kg/m[cube] C. 1000 kg/m[cube] D. 780kg/m[cube] Question Number 2 four balls a b c d displace 10ml,24ml,15ml,&12ml,of a liquid ,when immersed completely .the ball which will go max. appartment loss in weight will be A. A B. B C. C D. D Question Number 3 W=F COS THETA * ? A. S[DISTANCE MOVED] B. B C. C D. D Question Number 4 WHAT IS AN INFRASONIC SOUND ? A. THOSE SOUND WHOSE FREQUENCY IS MORE THAN 20 HZ B. THOSE SOUND WHOSE FREQUENCY IS LESS THAN 20 HZ C. ECHO D. ALL Question Number 5 WHAT IS SONAR? A. SOUND NAVIGATION AND ROSE B. SOUND NAVIGATION ARE ROAMING C. SHOAL OF NAVIGATION ARE ROAMING D. SOUND NAVIGATION AND RANGING