Which of the following is path function?
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A. Internal energy
B. work and heat
C. Enthalpy
D. Entropy
Physics MCQ's
The system which can exchange matter as well as energy with its surroundings is called____________?
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A. open system
B. Closed system
C. Isolated system
D. Inert system
The process in which no heat enters or leave the system known as _____________?
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A. Isochoric
B. Isobaric
C. adiabatic
D. Isothermal
Mach is the unit of measurement in stating the speed of a moving object in relation to__________?
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A. The speed of sound
B. The speed of other object
C. The speed of light
D. The speed of air resistance
When two charges are placed in water then the Coulomb force between them reduces to _____________?
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A. 1/2 times
B. 1/3 times
C. 1/78 times
D. 1/58 times
Which one of the following of glass can cut ultraviolet rays?
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A. Jena Glass
B. Soda Glass
C. Pyrex Glass
D. Crookes Glass
Optics does not deal with ___________?
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A. Nature of light waves
B. Properties of light
C. Characteristics of sound
D. Lenses and mirrors
Length, mass, time, intensity of light and amount of substance are examples of ____________?
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A. Base quantities
B. Derived quantities
C. Prefixes
D. Quartile quantities
The anti-matter is composed of: __________________?
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A. Anti-electrons
B. Anti-proton
C. Anti-neutron
D. All of these
Power of a lens is one diopter if its focal length is
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A. 1 meter
B. 2 meter
C. ½ meter
D. ¼ meter