27/03/2020Quantities, Mass and Weight(Senior Class Physics Study by Topics) 0Comments by Gate Academy Welcome to your Quantities, Mass and Weight(Senior Class Physics Study by Topics) NAME EMAIL PHONE NUMBER 1. At what respective values of x, y and z would the unit of force, the Newton, be dimensionally equivalent to MxLyTz 1, -1, 2 1, 1, -2 -1, 1, 2 -1, 1, -22. An object moves 4m eastwards and then 3m southwards. Its displacement from its original position is 1m SE 7m SE 12m SE 5m SE3. An example of scalar quantity is acceleration due to gravity electric charge weight momentum velocity4. Which of the following statements are true about the spring balance and the chemical balance?I. Both are used to measure the mass of an objectII. Either of them may be used to measure the weight of an objectIII. The spring balance works on the principle of Hooke's law while the chemical balance works on the principle of momentsIV. A change in gravity changes the reading of a spring balance but not that of a chemical balance. III and IV I and III II and III I and IV I, II and III5. The dimensions of viscosity areI. ML-1T-1II. M2L-1T-1III. M-1L-1T-1IV. MLT-1 I IV II III6. Two cars moving in the same direction have speeds of 100km/h and 130km/h. What is the velocity of the fastest car as measured by an observer in a slower car? 30km/h 130km/h 200km/h 230km/h7. Which of these quantities are vectors?I. MomentII. Temperature gradientIII. TemperatureIV. Density I & IV Only II, III & IV Only II & III Only I & II Only8. A stream is flowing at 0.75m/s and a boat heading perpendicularly to the stream landed at the opposite bank at an angle 30°. Calculate the velocity of the boat? 1.00m/s 0.86m/s 1.50m/s 0.65m/s9. Which of the following is not a fundamental S.I unit? Radian Ampere Meter Kelvin Second10. The diagram below shows two vectors at right angles to each other. The value of the resultant vector is 14.0N 10.0N 11.0N 12.0N11. If we want to talk meaningfully about the velocity vector for an object at a certain moment in time, we must specify the object's instantaneous mass & displacement mass & direction speed & direction mass & speed12. The inner diameter of a small test tube can be measured accurately using? Meter rule Pair of vernier calliper Pair of dividers A micrometer screw gauge13. The diagram below represents a portion of vernier calliper. What is its reading? 7.10cm 7.09cm 6.34cm 6.28cm 6.90cm14. A bird flying due north with a velocity of 15m/s sheds a feather in an air current blowing at 20m/s due east. The feather will move with a velocity of 15m/s north 25m/s east of south 20m/s east 25m/s west of south 25m/s east of north15. When we talk about steradians, we talk about Solid angular measure gravitational acceleration volume surface area16. A boat travels due east at a speed of 40m/s across a river flowing due south at 30m/s. What is the resultant speed of the boat? 50m/s 10m/s 70m/s 1.3m/s17. The thickness of the central portion of a thin converging lens can be determined very accurately by using? Vernier calliper A micrometer screw gauge A telescope A microscope18. Which of the following physical quantities is a scalar? Magnetic flux density Electric field intensity Magnetic flux Electric potential Gravitational field intensity19. Which of the following parameters manifests itself as a vector quantity? visible-light intensity temperature velocity mass20. The pair of physical quantity that are scalar only are Moment and momentum Volume and area Impulse and time Length and displacement21. In the United States of America, people often talk about British thermal units per hour (Btu/h) to quantify heat of fusion condensation rates power specific heat energy22. The power source of a ticker-timer vibrates 40 times in one second. If the ticker-timer made 200 dots during an experiment, determine how long the experiment lasted. 45 seconds 5 seconds 15 seconds 25 seconds23. Which of the following nonstandard ''units'' could we theoretically use to express the frequency of a sound wave? the joule per minute the kilogram-meter per minute the hertz per minute the cycle per minute the British thermal unit per meter24. What is the reading of the vernier scale? 1.97cm 1.80cm 1.88cm 1.28cm25. In 3D space, we can define the magnitude of a vector in terms of right ascension & declination the location of the coordinate origin the length of the line segment representing it celestial latitude & longitude26 out of 25Time is Up!