Phy – Half Book 2

1

The pressure exerted by a gas is due to:

A Collisions of gas particles with the walls of the container B Attraction between gas particles C The weight of the gas particles D The color of the gas

2

Which method is used to make a magnet by stroking?

A Single touch method B Electric method C Heating method D Hammering method

3

What happens to the pressure at a point in a liquid as the depth increases?

A It decreases B It remains the same C It increases D It becomes zero

4

What is physics?

A The study of living things B The study of matter and energy and how they interact C The study of human society D The study of rocks and minerals

5

According to Pascal's law, pressure applied to an enclosed liquid is transmitted:

A only in the direction of the applied force B only downwards C equally in all directions D only to the walls of the container

6

Mercury is commonly used in liquid-in-glass thermometers because it:

A expands uniformly over a wide range B has a very low boiling point C freezes at a high temperature D does not reflect light

7

Which liquid is commonly used in thermometers because of its wide range and visibility?

A Water B Mercury C Alcohol D Kerosene

8

What is the main purpose of falsifiability in science?

A To prove a theory true forever B To allow a theory to be tested and possibly disproved C To make experiments easier D To replace observations with opinions

9

Which property of a thermometer refers to the smallest temperature change it can detect?

A Range B Linearity C Sensitivity D Accuracy

10

Magnetic field lines outside a magnet run from:

A South pole to North pole B North pole to South pole C East to West D West to East

11

A testable statement that predicts the outcome of an experiment is called a:

A Theory B Hypothesis C Law D Conclusion

12

The constant temperature at which pure ice melts under standard atmospheric pressure is called the:

A Lower fixed point B Upper fixed point C Boiling point D Freezing point

13

In the scientific method, what is a testable statement that predicts the outcome of an experiment called?

A Theory B Law C Hypothesis D Conclusion

14

Which device uses an electromagnet?

A Compass needle B Loudspeaker C Bar magnet D Horseshoe magnet

15

فضا کا دباؤ ماپنے کے لیے کون سا آلہ استعمال ہوتا ہے؟

A مینومیٹر B بیرومیٹر C تھرمامیٹر D ہائیڈرومیٹر

16

In a mercury barometer, the height of the mercury column is measured from:

A the top of the tube to the mercury level B the mercury level in the trough to the mercury level in the tube C the bottom of the tube to the trough D the open end of the tube to the closed end

17

Which statement best describes the motion of particles in a solid?

A They move freely from place to place B They vibrate about fixed positions C They are completely stationary D They expand to fill the container

18

Which of the following is a difference between heat and temperature?

A Heat is measured in degrees, temperature in joules. B Heat is a form of energy, temperature is a measure of average kinetic energy. C Heat depends on the thermometer used, temperature does not. D Heat is always larger than temperature.

19

Which of the following is an application of physics in daily life?

A Using a microwave oven B Reading a novel C Writing a poem D Painting a picture

20

In a hydraulic press, a small force applied to a small piston produces a large force on a large piston because:

A Pressure is greater in the larger piston B Pressure is transmitted equally to both pistons C The larger piston has less area D The liquid is compressible

21

For a thermometer to have high sensitivity, it should have:

A A narrow bore and a large bulb B A wide bore and a small bulb C A long stem and a small bulb D A thick glass wall and a wide bore

22

A liquid is stored in a container. The pressure at a depth h in the liquid is given by P = hρg. If the depth is doubled, what happens to the pressure?

A It becomes half B It doubles C It remains the same D It becomes four times

23

Which of the following correctly distinguishes heat from temperature?

A Heat is a measure of average kinetic energy, while temperature is total energy B Heat is total kinetic energy of particles, while temperature is average kinetic energy C Heat and temperature are the same physical quantity D Heat is measured in kelvin, while temperature is measured in joules

24

The scientific method starts with:

A Conclusion B Hypothesis C Observation D Theory

25

A testable statement that can be proved true or false is called a:

A Theory B Law C Hypothesis D Conclusion