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Physics

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Physics is a core science subject that deals with the study of matter, energy, motion, force, heat, light, electricity, magnetism, and modern physics concepts. It plays a vital role in competitive exams such as PPSC, FPSC, NTS, OTS, KPPSC, BPSC, AJKPSC, CSS, and PMS, where questions test conceptual understanding, numerical problem-solving, and application of laws and formulas.

A It is sum of all forms of energies associated with molecules of a system

B It is a state function of a system

C It is proportional to transnational K.E of the molecules

D All are correct

A Different in different direction

B Same in all direction

C Same only along opposite directions

D Same only along normal directions

A One degree of Fahrenheit scale

B 1.8 degrees of Fahrenheit scale

C 3.2 degrees of Fahrenheit scale

D 2.12 degrees of Fahrenheit scale

A 40

B 15.5

C 542

D 273

A 37°C

B 42°C

C 55°C

D 410°C

A 1.38×10-31JK-1

B 3.18×10-31JK-1

C 3.18×10-23JK-1

D 1.38×10-23JK-1

A Over a wide range of temperature its expansion is uniform

B It does not stick to thermometer glass

C It opaque to light

D All of above

A Mercury takes a long time to contract

B The amount of mercury use is very small

C The capillary tube has a small constriction near the bulb

D The capillary tube is very narrow

A rapid escape of air from a burst tyre

B rapid expansion of air

C conversion of water into ice in refrigerator

D cloud formation in the atmosphere

A its pressure is constant

B its pressure rises

C its pressure falls

D any of above

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Which one is true for internal energy ?

According to Pascals law the pressure of gas in a vessel is_____________?

The size of one degree of Celsius is equal to_________________?

The Fahrenheit and centigrade scales agree to________________?

Normal human body temperature 98.6°F corresponds to______________?

Numerical value of Boltzmanns constant is______________?

We prefer mercury as a thermometric substance because______________?

In a clinical thermometer the mercury in the capillary tube does not contract once removed from the patient because_______________?

Which one is not an example of adiabatic process ?

If the volume of a gas is held constant and we increase its temperature then_______________?