1. Tides are primarily a result of the -
1. Attraction of the moon
2. Farrel's Law
3. Ocean currents
4. Pressure system of the earth
1. Convex lens
2. Concave lens
3. Convex mirror
4. Bifocal Lens
3. Newton's 1st Law is the law of -
1. Inertia
2. Force
3. Momentum
4. Acceleration
4. Electric fuse wire is made of alloys because alloys -
1. Have low melting point
2. Have high melting point
3. Are economical
4. Do not get heated easily
5. Which two colours can be mixed to make green?
1. Yellow and Balck
2. Yellow and Blue
3. Orange and Violet
4. Purple and Yellow
6. Raindrops are spherical due to -
1. Viscosity of water
2. Surface tension
3. Continuous evaporation
4. Air friction
7. Atmospheric pressure is measured with a -
1. Hydrometer
2. Barometer
3. Hygrometer
4. Altimeter
8. A person climbing a hill bends forward in order to -
1. Avoid slipping
2. Increase speed
3. Reduce fatigue
4. Increase stability
9. One finds it more difficult to walk on ice than on a concrete road because -
1. Ice is soft and spongy where as concrete is hard
2. the friction between the ice and the feet is less than that between the concrete and the feet
3. There is more friction on ice than on concrete
4. None of the above
10. A person weighs more in a lift, which is -
1. Moving up with a constant velocity
2. Moving down with a constant velocity
3. Accelerating upward
4. Accelerating downward
11. A device used for converting A. C. into D. C. is called -
1. Transformer
2. Rectifier
3. Induction coil
4. Dynamo
12. Which of the following are Einstein's discoveries?
1. Photoelectric affect and X-rays
2. Radioactivity and the theory of relativity
3. Photoelectric effect and the theory of relativity
4. Radioactivity and X-rays
13. Which one of the following SI units is not correctly matched?
1. Work - Joule
2. Mass - Kg
3. Force - Newton
4. Pressure - Dyne
14. An air bubble in water will act like a -
1. Convex mirror
2. Concave lens
3. Concave mirror
4. Convex lens
15. A thermostat is a device for -
1. Switching off an electrical appliance
2. Measuring temperature
3. Regulating temperature
4. Producing Heat
ANSWERS:
1. 1
2. 2
3. 1
4. 1
5. 2
6. 2
7. 2
8. 4
9. 2
10. 3
11. 2
12. 3
13. 4
14. 2
15. 3
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