MID TERM TEST FIRST TERM PHYSICS SS 2

FIRST TERM EXAMINATION

           Class:  SS2                         Subject: PHYSIC                    Time:

1. The S.I unit for sound energy is  A. Hz  B. cd  C. dB  D. J
2. The general definition of elastic modulus is  A. stressstrain  B. stainstress  C. stress ×strain D. stress ×strain
3. The property of a body to remain at rest or to continue in uniform motion in a straight line is called  A. momentum  B. Inertia  C. impulse  D. Energy
4. A dam is able to hold a large quantity of water because its wall is  A. thickest at the top  B. thickest at the middle  C. thickest at the bottom  D. of the same thickness throughout
5. A body of mass m moving around a circle of radius r with a uniform speed v experiences a centripetal force F. The work done by the centripetal force on it is  A. Fv  B. zero  C. Fmr  D. Fr/m
6. An object at rest is said to possess   A. potential energy  B. kinetic energy  C. chemical energy  D. electrical energy
7. The ice point on the absolute scale of temperature is  A. 0K  B. 32K  C. 100K  D. 273K
8. Which of the following factors does not increase the rate of evaporation of water in a lake?  A. Increase in the pressure of the atmosphere  B. Rise in temperature  C. Increase in the surface area of the lake  D. Increase in the speed of the wind
9. The bob of a simple pendulum takes 8.0s to complete 10 oscillations. Determine the frequency of oscillation of the bob.  A. 0.125Hz  B. 1.25Hz  C. 7.50Hz  D. 8.00Hz
10. Frequency is measured in   A. meter per second   B. seconds  C. hertz  D. farad
11. Which of the following electromagnetic waves is most energetic?   A. Radio waves  B. X-ray  C. Gamma rays  D. Ultra-violet rays
12. Rainbow formation is a natural phenomenon illustrating that white light  A. splits into three components after rainfall  B. is dispersed by glass prisms  C. splits into its constituent colours before rainfall  D. is dispersed into its constituent colours after rainfall
13. The pitch of a note is not affected by  A. frequency  B. tension in a vibrating string  C. mass of a vibrating string  D. amplitude of sound wave
14. When two flat plate conductors are arranged in such a way that they possess equal and opposite charges seperated by a dielectric, they form a/an  A. electroscope  B. electrophorus  C. capacitor  D. cell
15. When the speed of a car is halved, its kinetic energy is  A. doubled  B. quartered C. halved  D. quadrupled
16. Which of the following statements is not an advantage of an alkaline accumulator?  A. The electrolyte does not need attention  B. It can be recharged  C. It has low internal resistance  D. It has a much longer life than lead-acid accumulator
17. Which of the following statements about magnetic lines of force is not correct? They  A. pass through even non-magnetic materials  B. run from the north pole to the south pole  C. are in a state of tension and tend to be shorted  D. intersect one another
18. In which of the following activities is an induction coil not useful?  A. Investigation of high voltages  B. Study of electric discharge  C. Operation of X-ray tubes  D. A.C. power transmission
19. Which of the following radiations has the longest wavelength?  A. Gamma ray  B. Radio wave  C. Infrared ray  D. X-ray
20. In which of the following fields is radioisotopes not used?  A. Medicine  B. Oil industry  C. Agriculture  D. Weather forecast

THEORY

1. Define Projectile

1. List 3 Projectiles each in sports and warfare
2. What is a trajectory and explain the vertical and horizontal component of velocity of a projectile 

1. Give 2 differences between scalar and vector quantity.

1.   Give two differences between resultant and equilibrant 
2.     State the law of inertia

1. A stone thrown vertically upward with a velocity 100ms-1 hits the ground after 4s. calculate its angle of projection, maximum height attained and range  (g = 10ms-1)

1. A cat sitting on a shelf bounce horizontally on a mouse 20m away from the shelf at a velocity 50ms-1. Calculate the height of the shelf.

1. Two forces 10N and 12N act along the point 0 at an angle 600. Calculate the magnitude and direction of the resultant force acting along 0.

1.   State parallelogram law of vectors

1. A long jumper jumps at a velocity 50ms-1 at an angle 300 to the horizontal. Calculate his  (i) time of flight  (ii) maximum height  (iii) Range