Absorption of ink by blotting paper involves the capillary reaction phenomenon; option [B]. Capillary action occurs due to the cohesive and adhesive forces between the liquid molecules and the fibers of the paper. This interaction causes the ink to be drawn upward through the small pores in the papeRead more
Absorption of ink by blotting paper involves the capillary reaction phenomenon; option [B]. Capillary action occurs due to the cohesive and adhesive forces between the liquid molecules and the fibers of the paper. This interaction causes the ink to be drawn upward through the small pores in the paper, facilitating its absorption. Capillary action is crucial in processes like ink absorption in blotting paper, where it efficiently pulls the ink into the paper fibers. Viscosity of the ink refers to its resistance to flow and is not directly related to the adsorption process. Diffusion of ink through blotting involves the movement of ink molecules through the paper, which is not the primary mechanism in ink absorption by blotting paper. Siphon action requires a continuous flow of liquid, which is not applicable to the absorption of ink by blotting paper. Therefore, the correct option is [B] Capillary Reaction phenomenon.
Action and reaction have the same magnitude and opposite directions; option [D]. According to Newton's third law of motion, when one object exerts a force on another object (action), the second object exerts an equal but opposite force on the first object (reaction). These forces act on different obRead more
Action and reaction have the same magnitude and opposite directions; option [D]. According to Newton’s third law of motion, when one object exerts a force on another object (action), the second object exerts an equal but opposite force on the first object (reaction). These forces act on different objects, have equal magnitudes, and opposite directions. Therefore, all options are correct: [A] Work on two different objects, [B] Have the same magnitude, and [C] Have opposite directions. This fundamental principle of action and reaction is essential in understanding the dynamics of interactions between objects and is applicable in various fields of physics and engineering. It elucidates how forces are transmitted between objects and plays a critical role in analyzing and predicting the motion of systems governed by Newtonian mechanics.
To cover the maximum horizontal distance, a ball should be thrown at a 45° angle from the horizontal; option [D]. At this angle, the horizontal and vertical components of the initial velocity are equal, leading to the greatest range for a projectile launched with the same initial speed. Therefore, tRead more
To cover the maximum horizontal distance, a ball should be thrown at a 45° angle from the horizontal; option [D]. At this angle, the horizontal and vertical components of the initial velocity are equal, leading to the greatest range for a projectile launched with the same initial speed. Therefore, the correct option is [D] 45°. This principle is derived from the equations of projectile motion and is applicable in various contexts, from sports like basketball and javelin throwing to engineering applications such as projectile motion calculations. Understanding the optimal launch angle for maximum range is essential for achieving desired distances in projectile motion scenarios, making it a fundamental concept in physics and practical applications. Thus, launching the ball at a 45° angle ensures it travels the farthest horizontally compared to other angles listed.
Angstrom measures wavelength; option [B]. It is a unit of length used predominantly in fields such as atomic physics, spectroscopy, and crystallography. Named after the Swedish physicist Anders Jonas Ångström, 1 Angstrom is equivalent to 0.1 nanometers or 10^(-10)meters. This unit is particularly usRead more
Angstrom measures wavelength; option [B]. It is a unit of length used predominantly in fields such as atomic physics, spectroscopy, and crystallography. Named after the Swedish physicist Anders Jonas Ångström, 1 Angstrom is equivalent to 0.1 nanometers or 10^(-10)meters. This unit is particularly useful in expressing the sizes of atoms and molecules, as well as the wavelengths of electromagnetic radiation, including light. In spectroscopy, for instance, Angstroms are commonly used to measure the wavelengths of spectral lines emitted or absorbed by atoms and molecules. This allows scientists to analyze the composition and properties of substances based on the characteristic wavelengths of light they emit or absorb. Therefore, Angstrom serves as a fundamental unit for quantifying the spatial periodicity of waves and the distances between atomic or molecular structures. Consequently, the correct option is [B] Wavelength, as Angstroms are primarily utilized to measure the lengths of waves, whether they are electromagnetic waves or the characteristic sizes of atomic and molecular structures.
Before Newton, Varahamihir, an ancient Indian astronomer and mathematician, proposed that all objects gravitate towards the Earth; option [B]. He lived during the 6th century CE and contributed significantly to the fields of astronomy and mathematics. Varahamihir's work laid the foundation for underRead more
Before Newton, Varahamihir, an ancient Indian astronomer and mathematician, proposed that all objects gravitate towards the Earth; option [B]. He lived during the 6th century CE and contributed significantly to the fields of astronomy and mathematics. Varahamihir’s work laid the foundation for understanding gravitational forces, predating Newton’s discoveries by several centuries. Therefore, the correct option is [B] Varahamihir. His insights into the gravitational attraction of objects towards the Earth demonstrate the early recognition of this fundamental force in the natural world, highlighting the rich history of scientific inquiry and discovery in ancient India. Varahamihir’s contributions to astronomy and mathematics continue to be recognized for their significance in shaping our understanding of the universe and its physical laws, including the force of gravity.
Absorption of ink by blotting paper involves
Absorption of ink by blotting paper involves the capillary reaction phenomenon; option [B]. Capillary action occurs due to the cohesive and adhesive forces between the liquid molecules and the fibers of the paper. This interaction causes the ink to be drawn upward through the small pores in the papeRead more
Absorption of ink by blotting paper involves the capillary reaction phenomenon; option [B]. Capillary action occurs due to the cohesive and adhesive forces between the liquid molecules and the fibers of the paper. This interaction causes the ink to be drawn upward through the small pores in the paper, facilitating its absorption. Capillary action is crucial in processes like ink absorption in blotting paper, where it efficiently pulls the ink into the paper fibers. Viscosity of the ink refers to its resistance to flow and is not directly related to the adsorption process. Diffusion of ink through blotting involves the movement of ink molecules through the paper, which is not the primary mechanism in ink absorption by blotting paper. Siphon action requires a continuous flow of liquid, which is not applicable to the absorption of ink by blotting paper. Therefore, the correct option is [B] Capillary Reaction phenomenon.
See lessAction and reaction
Action and reaction have the same magnitude and opposite directions; option [D]. According to Newton's third law of motion, when one object exerts a force on another object (action), the second object exerts an equal but opposite force on the first object (reaction). These forces act on different obRead more
Action and reaction have the same magnitude and opposite directions; option [D]. According to Newton’s third law of motion, when one object exerts a force on another object (action), the second object exerts an equal but opposite force on the first object (reaction). These forces act on different objects, have equal magnitudes, and opposite directions. Therefore, all options are correct: [A] Work on two different objects, [B] Have the same magnitude, and [C] Have opposite directions. This fundamental principle of action and reaction is essential in understanding the dynamics of interactions between objects and is applicable in various fields of physics and engineering. It elucidates how forces are transmitted between objects and plays a critical role in analyzing and predicting the motion of systems governed by Newtonian mechanics.
See lessAt what angle should a ball be thrown from the horizontal so that it can cover the maximum horizontal distance?
To cover the maximum horizontal distance, a ball should be thrown at a 45° angle from the horizontal; option [D]. At this angle, the horizontal and vertical components of the initial velocity are equal, leading to the greatest range for a projectile launched with the same initial speed. Therefore, tRead more
To cover the maximum horizontal distance, a ball should be thrown at a 45° angle from the horizontal; option [D]. At this angle, the horizontal and vertical components of the initial velocity are equal, leading to the greatest range for a projectile launched with the same initial speed. Therefore, the correct option is [D] 45°. This principle is derived from the equations of projectile motion and is applicable in various contexts, from sports like basketball and javelin throwing to engineering applications such as projectile motion calculations. Understanding the optimal launch angle for maximum range is essential for achieving desired distances in projectile motion scenarios, making it a fundamental concept in physics and practical applications. Thus, launching the ball at a 45° angle ensures it travels the farthest horizontally compared to other angles listed.
See lessWhat does Angstrom measure?
Angstrom measures wavelength; option [B]. It is a unit of length used predominantly in fields such as atomic physics, spectroscopy, and crystallography. Named after the Swedish physicist Anders Jonas Ångström, 1 Angstrom is equivalent to 0.1 nanometers or 10^(-10)meters. This unit is particularly usRead more
Angstrom measures wavelength; option [B]. It is a unit of length used predominantly in fields such as atomic physics, spectroscopy, and crystallography. Named after the Swedish physicist Anders Jonas Ångström, 1 Angstrom is equivalent to 0.1 nanometers or 10^(-10)meters. This unit is particularly useful in expressing the sizes of atoms and molecules, as well as the wavelengths of electromagnetic radiation, including light. In spectroscopy, for instance, Angstroms are commonly used to measure the wavelengths of spectral lines emitted or absorbed by atoms and molecules. This allows scientists to analyze the composition and properties of substances based on the characteristic wavelengths of light they emit or absorb. Therefore, Angstrom serves as a fundamental unit for quantifying the spatial periodicity of waves and the distances between atomic or molecular structures. Consequently, the correct option is [B] Wavelength, as Angstroms are primarily utilized to measure the lengths of waves, whether they are electromagnetic waves or the characteristic sizes of atomic and molecular structures.
See lessWho of the following had told before Newton that all objects gravitate towards the earth?
Before Newton, Varahamihir, an ancient Indian astronomer and mathematician, proposed that all objects gravitate towards the Earth; option [B]. He lived during the 6th century CE and contributed significantly to the fields of astronomy and mathematics. Varahamihir's work laid the foundation for underRead more
Before Newton, Varahamihir, an ancient Indian astronomer and mathematician, proposed that all objects gravitate towards the Earth; option [B]. He lived during the 6th century CE and contributed significantly to the fields of astronomy and mathematics. Varahamihir’s work laid the foundation for understanding gravitational forces, predating Newton’s discoveries by several centuries. Therefore, the correct option is [B] Varahamihir. His insights into the gravitational attraction of objects towards the Earth demonstrate the early recognition of this fundamental force in the natural world, highlighting the rich history of scientific inquiry and discovery in ancient India. Varahamihir’s contributions to astronomy and mathematics continue to be recognized for their significance in shaping our understanding of the universe and its physical laws, including the force of gravity.
See less