1. An ideal gas has a volume of 155cm^{3} at a pressure of 3.00 x 10^{5}Pa and at 28^{0}C. Find its volume at a pressure of 5.5 x 10^{5}Pa and temperature of 70^{o}C a) 301cm^{3} b) 96.34cm^{3} c) 963.4cm^{3} d) 343cm^{3}

**Right choice – Option B**

2. Three 5 ohms resistors are connected in parallel with a potential difference of 6V across the combination. The heat dissipated in

each of them in 3s is a) 21.6J b) 72J c) 648J d) 720J

**Right choice – Option C**

3. A particle moves due east at 4m/s the change in velocity a) 7m/s at 35^{o}South of West b) 1m/s at 25^{o }South c) 5m/s at 37^{o} South of West d)4m/s at 37o South of West

**Right choice – Option**

4. A herdsman yelling out to a fellow herdsman heard the echo of his yell from a cliff 5s after. If the velocity of sound is

340m/s in air, how far is the cliff form the herdsman? a) l,700m b) 425m c) 340m d) 850m

**Right choice – Option D**

5. Which of the following is different from the others? a) Gamma ray b) X-ray c) Cathode ray d) Ultraviolet ray

**Right choice – Option C**

6. A uniform plank AB is 10m and weigh 150N, It is supported at both ends as shown below. A man weighing 850N stands at a point 3m

away from end A of the plank. Calculate the reaction R at the end of the plank. a) 100N b) 330N c) 670N d) 600N

**Right choice – Option B**

7. In an AC circuit, a 10mH inductor and a 10 resistor are connected in series. If the frequency of the AC line is 50Hz, what is the impedance of the combination? a) 10.48o ohm b) 100 ohm c) 109.88 ohm d) 9.8 ohm

**Right choice – Option A**

8. An object is weighed with a spring balance. First in air and then whilst totally immersed in water. The readings on the balance are

0.48N and 0.36N respectively. Calculate the density of the object (Density of water= 1 x 10^{3}kg/m^{3} a) 2.5 x 1O^{2}kg/m^{3} b) 22.5 x 1o^{2}kg/m^{3} c) 2.5 x 10^{2}kgm^{-3} d) 4.0 x 10^{2}kgm^{-3}

**Right choice – Option**

9. A ray of light travels from glass into air. What is the critical angle? The refractive index of glass is 1.6 a)42^{0} b)39^{0} c)40^{0} d)49^{0}

**Right choice – Option B**

10. A piece of stone is dropped from the top of a cliff. How far does it drop in the fifth second? g =10m/s^{2} a) 45m b) 35m c) 62m d)55m **Right choice – Option A**

11. Two balls of masses 15g and 25g are moving with velocities 24m/s and I 6m/s respectively. The balls collide on impact. Find their

velocity after collision. a) 20m/s b) 19m/s c) 22m/s d) 21m/s

**Right choice – Option**

12. 200g of water at 10^{0}C is contained in a vessel of negligible mass, 400g of warer at 100^{0}C is poured into it. What is the temperature of the mixture? a) 70^{0}C b) 55^{0}C c) 85^{0}C d) 80^{0}c

**Right choice – Option**

13. An electric bulb is labelled 100W, 220V. What is the resistance the filament wire? a)350 ohm ) 484 ohm c) 378 ohmQ d) 254ohm

**Right choice – Option**

14. The water in a swimming pool appears to be 1.5m deep. The refractive index of water Is 1.33. What is

the real depth f the water in the swimming pool? a) 1.9m b) 1.5m c) 2.1m d) 2.0m

**Right choice – Option**

15. At 0^{0}c, the velocity of sound in is 330m/s. Whar is the velocity of 6 sound at 100^{0}C? a) 397mls b) 291mls c) 405m/s d) 386m/s

**Right choice – Option**

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