Class 12th Physics Chart. We covered all the Class 12th Physics Chart MCQs in this post for free so that you can practice well for the exam.
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Class 12th Physics Chart Objective for Students
Which one of the following statements is correct? The velocity of sound:
(a) does not depend upon the nature of the media
(b) is maximum in gases and minimum in liquids
(c) is maximum in solids and minimum in liquids
(d) is maximum in solids and minimum in gases
Option d – is maximum in solids and minimum in gases
Which one of the following statements is not correct?
(a) The response of the ear to the sound of increasing intensity is approximately logarithmic.
(b) The sensitivity of the human ear does not vary with the frequency of the sound.
(c) When two or more waves verse the same medium, the displacement of any element of the medium is the algebraic sum of the displacements due to each wave.
(d) Longitudinal waves can travel in all media solids, liquids, and gases.
Option b – The sensitivity of the human ear does not vary with the frequency of the sound
The rate of change of momentum of a body is equal to the resultant:
(a) energy
(b) power
(c) force
(d) impulse
Option c – force
After a hot sunny day, people sprinkle water on the roof-top because:
(a) water helps air around the roof-top to absorb the heat instantly
(b) water has a lower specific heat capacity
(c) water is easily available
(d) water has a large latent heat of vaporization
Option d – water has a large latent heat of vaporization
The SI unit of mechanical power is:
(a) Joule
(b) Watt
(c) Newton-second
(d) Joule-second
Option b – Watt
Two systems are said to be in thermal equilibrium if and only if:
(a) there can be a heat flow between them even if they are at different temperatures
(b) there cannot be a heat flow between them even if they are at different temperatures
(c) there is no heat flow between them
(d) their temperatures are slightly different
Option c – there is no heat flow between them
We covered all the class 12th physics chart mcqs above in this post for free so that you can practice well for the exam.
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