Home
Class 12
PHYSICS
Assertion : Maximum air flow due to conv...

Assertion : Maximum air flow due to convection does not occur at the north pole but it occurs at `30^(@)N`.
Reason : There is maximum temperature difference between equator and `30^(@)N`

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true but reason is not the correct explanation of assertion.

C

If assertion is true but reason is false

D

If both assertion and reason are false.

Text Solution

AI Generated Solution

Promotional Banner

Similar Questions

Explore conceptually related problems

Assertion : If fertilization does not occur than the corpus luteum begins to degenerate . Reason : The levels of progesterone and estrogen decline due to degeneration of the corpus luteum .

Assertion : The maximum number of electrons in the shell with principle quantum number n is equal to 2n^(2) . Reason : Two electrons can have the same value of three quantum numbers n, l and m_(l) , but must have the opposite spin quantum number.

Assertion : In longitudinal wave pressure is maximum at a point where displacement is zero . Reason : There is a phase difference of (pi)/(2) between y(x,t) and Delta P (x, t) equation in case of longitudinal wave.

Assertion (A): It is not necessary that every magnet has one north pole and one south pole. Reason (R ): It is a basic fact that magnetic poles occur in pairs

Assertion (A): A reaction between Fe and I_(2) occurs, but a reaction between Fe^(2+) and I^(ө) does not occur. Reason (R ): Fe is a better reducing agent than I^(ө) .

Thermoelectricity refers to a phenomenon that occur at the junctions of dissimilar conductors or within a single conductor, when a temperature difference exists between the junctions or across a conductor. There are three thermogalvanic effects, namely Seebeck effect, Peltier effect and Thomson effect. They involve conversion of thermal energy into electrical energy or vica versa. They are all reversible in contrast with the Joule effect which is irrevesible. Seebeck effect is the superposition of Peltier effect and Thomson effect. In a thermocouple, if the two junctions are maintained at a potential difference, a temperature difference is established, i.e. heat is generated at one junction and absorbed at the other junction. This is called Peltier effect and its converse is the Seebeck effect. The relationship between the. thermo-emf across the junction and the temperature difference is parabolic. Equation between Seebeck emf and temperature difference (0) across the function may be written as

Thermoelectricity refers to a phenomenon that occur at the junctions of dissimilar conductors or within a single conductor, when a temperature difference exists between the junctions or across a conductor. There are three thermogalvanic effects, namely Seebeck effect, Peltier effect and Thomson effect. They involve conversion of thermal energy into electrical energy or vica versa. They are all reversible in contrast with the Joule effect which is irrevesible. Seebeck effect is the superposition of Peltier effect and Thomson effect. In a thermocouple, if the two junctions are maintained at a potential difference, a temperature difference is established, i.e. heat is generated at one junction and absorbed at the other junction. This is called Peltier effect and its converse is the Seebeck effect. The relationship between the. thermo-emf across the junction and the temperature difference is parabolic. Magnitude of Seebeck emf between the junctions does not depend on

Assertion :- Maximum absorption of food occur in small intestine. Reason :- Villi & microvilli abundantly present in small intestine.

Assertion : The difference in the value of acceleration due to gravity at pole and equator is proportional to square of angular velocity of earth. Reason : the value of acceleration due to gravity is minimum at the equator and maximum at the pole.

Assertion : In the human the temperature of scrotum is 2-2.5^(@)C lesser then normal body temperature . Reason : Formation of sperm does not occur at normal core body temperature . (a) If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion . (b) If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion. (c) If Assertion is True but the Reason is False . (d) If both Assertion & Reason are False.