Title physics qb.pdf ✅

Question Bank Applied Physics Unit-I (Physical Quantities, Motion in Two or Three dimensions) PART-A (Short answer questions of 2-marks) 1. What is unit? 2. What is SI system? 3. What is MKS system? 4. Convert the units of force and work from SI to CGS system. 5. Give a rule of unit consistency. 6. What are trailing and captive zero numbers? 7. What is a significant figure for a countable object. 8. Find the order of a number 100. 9. What is absolute uncertainty? 10. What is relative uncertainty? 11. Give the rules to get an estimated number when there is 5 on the right side of an estimated digit. 12. What is instantaneous velocity? 13. What is average velocity? 14. What is instantaneous acceleration? 15. What is projectile motion? 16. Describe the centripetal force. 17. Describe the Curl in the conservative force. 18. What is bounding central force. 19. What is un-bounding central force. PART-B (Theoretical questions of 4/8-marks) 1. Explain standards and units. 2. Explain the types of units. 3. Describe unit systems. 4. Get the unit conversions. 5. What is unit consistency? Explain. 6. What is uncertainty and significant figures.
7. Describe the types of uncertainty. 8. Describe the rules to be followed to significant figures. 9. Explain estimates and orders of magnitude. 10. How an estimated number is obtained? Explain. 11. Find the position and velocity vectors by describing average and instantaneous velocities. 12. Describe the acceleration vector. 13. Explain average and instantaneous velocities. 14. Describe average and instantaneous acceleration. 15. Describe the projectile motion. 16. Derive the equation of the maximum height and horizontal range attained in a projectile motion. 17. Describe the motion of the particle in a circle. 18. Describe the motion of the particle in the horizontal and in the vertical circular paths. 19. Find the equations of the relative velocity. 20. Describe free body diagrams. 21. Discriminate Conservative and Non-conservative Forces. 22. Explain Central and non-central forces. 23. What is non-inertial frame of reference? Explain. PART-C (Numerical questions of 3/4 marks) 1. Derive the S.I. unit of joule (J) in terms of fundamental units. 2. If x=a+bt+ct2 , where x is in metres and t is in seconds. Find units of a, b and c. 3. Calculate with answers using the correct number of significant figures. a. 87.25 mL + 3.0201 mL b. 26.843 g + 12.23 g c. 6 × 12.011 d. 2(1.008) g + 15.99 g e. 137.3 + 2(35.45) f. 118.72g−35.5g118.72g−35.5g g. 47.23g−207.25.92g47.23g−207.25.92g h. 77.6046.467−4.877.6046.467−4.8 i. 24.862.0−3.26(0.98)24.862.0−3.26(0.98) j. (15.9994×9)+2.0158(15.9994×9)+2.0158 Solution a. 90.27 mL b. 39.07 g
c. 72.066 (See rule 5 under “Significant Figures.”) d. 2(1.008) g + 15.99 g = 2.016 g + 15.99 g = 18.01 g e. 137.3 + 2(35.45) = 137.3 + 70.90 = 208.2 f. 59.35 g − 35.5 g = 23.9 g g. 47.23 g − 35.0 g = 12.2 g h. 12.00 − 4.8 = 7.2 i. 12 − 3.2 = 9 j. 143.9946 + 2.0158 = 146.0104 4. A body starts moving with a velocity of 20 m/s. If the acceleration of the body is 2 m/s, then calculate: i) velocity of the body after 10 sec, ii) distance travelled in 5 sec. 5. A ball is thrown vertically upwards with a velocity of 10 m/s. Then i) calculate height attained by the ball, ii) after how much time it will start its return journey, iii) what will be the velocity of the ball when it reaches the ground. 6. Prove that maximum horizontal range is four times the maximum height attained by the projectile when fired at an inclination so as to have maximum horizontal range. 7. In long jumping, does it matter how high you jump? What factors determine the span of the jump? 8. A cricketer can throw a ball to a maximum horizontal distance of 100 m. How much high above the ground can the cricketer throw the same ball? 9. A wheel of radius 0.60 m is moving with a speed of 10 m/s. Find its angular speed. 10. A stone tied to the end of string 80 cm long is whirled in a horizontal circle with a constant speed. If the stone makes 14 revolutions in 25 seconds, what is the magnitude and direction of the acceleration of the stone? 11. A stone of mass 1.3 kg is tied to the end of a string of length 1m. Holding other end of the string the stone is set into circular motion of frequency 40 revolutions/min in horizontal plane. (i) Calculate the tension in the string, (ii) If string can withstand a maximum tension of 200 N calculate the maximum speed of whirling stone. 12. The turning of a leveled road has radius 100 metres. If coefficient of friction between road and tyres is 0.8, then calculate the maximum speed of car for safe drive without skidding. 13. Calculate the angular velocity and linear velocity of a tip of minute hand of length 10 cm. 14. A car of mass 2000 kg moves round a curve of radius 250 m at 90 km/hr. Compute: i) angular speed, ii) centripetal acceleration, iii) centripetal force. 15. A bucket containing water is tied to one end of a rope and rotated about the other end in a vertical circle at arm’s length. Find the minimum speed at the top to ensure that no water spills out. Also, find the angular speed. g=9.8 m/s2 , r=0.75 m.
16. An object of mass 0.5 kg attached to a string of length 0.5 m is whirled in a vertical circle at constant angular speed if the maximum tension in the string is 5 kg wt. Calculate the speed of the object and maximum number of revolutions it can complete in one minute. 17. A particle is traveling in a circle of radius R = 1.5 m and with an angular velocity of 10 rad/s. What is the tangential velocity of the particle? 18. A particle is traveling in a circle of radius R = 2.5 m and with an angular velocity of 10 rad/s. What is the centripetal acceleration of the particle? 19. A particle is moving around in a circle of radius R = 1.5 m with a constant speed of 2 m/s. What is the centripetal acceleration and angular velocity of the particle? Unit-II (Introduction to Quantum Mechanics) PART-A (Short answer questions of 2-marks) 1. What is de-broglie wave length? 2. What is particle wave nature? 3. What is wave length? 4. Describe photon. 5. Give a relation between momentum and the wavelength of a matter particle. 6. What is phase/wave velocity? 7. Give a relation between phase velocity and group velocity. 8. What is group velocity? 9. Describe dispersion in terms of phase and group velocity. 10. Give a relation between phase velocity and group velocity. 11. Write the time independent Schrodinger’s wave equation. 12. Write the time dependent Schrodinger’s wave equation. 13. Explain Born interpretation of wave function. 14. Explain probability distribution function. 15. What is expectation value of a physical quantity. 16. What is Uncertainty principle? 17. Explain the total energy of a particle enclosed in a box. 18. How energy levels are distributed for a particle in a box. 19. Describe the properties of wave function. 20. What is the normalization condition of the probability? 21. What is the orthogonal condition of the probability?