SSC CGL Physics Questions and Answers – Page 8

— the scientifically appropriate response is Longitudinal wave. Option-wise review: Longitudinal wave is correct under the condition given in the stem. Transverse wave is incorrect because it describes a different quantity or phenomenon and does not meet the stated condition. Electromagnetic wave is also incorrect; although it may be a valid physics term, its definition or application is not the one asked here. Surface wave is incorrect because it fails the governing relation or characteristic relevant to this case. Therefore, option B, Longitudinal wave, is factually and logically consistent with the question. Sound is a longitudinal mechanical wave where particle displacement is parallel to wave propagation.

finition, law, relation, or working principle involved. In concise terms, What is the relationship between frequency and wavelength of a wave? — the scientifically appropriate response is Inversely proportional. Option-wise review: Inversely proportional is correct under the condition given in the stem. Directly proportional is incorrect because it describes a different quantity or phenomenon and does not meet the stated condition. No relation is also incorrect; although it may be a valid physics term, its definition or application is not the one asked here. Equal is incorrect because it fails the governing relation or characteristic relevant to this case. Identify the chapter, recall the exact definition or equation, check the unit or direction if applicable, and then eliminate choices that contradict it. Therefore, option B, Inversely proportional, is factually and logically consistent with the question.v = fλ so for constant speed frequency and wavelength are inversely proportional.

In concise terms, Which phenomenon explains the formation of rainbow? — the scientifically appropriate response is Dispersion. Option-wise review: Dispersion is correct under the condition given in the stem. Reflection is incorrect because it describes a different quantity or phenomenon and does not meet the stated condition. Diffraction is also incorrect; although it may be a valid physics term, its definition or application is not the one asked here. Polarization is incorrect because it fails the governing relation or characteristic relevant to this case. Therefore, option C, Dispersion, is factually and logically consistent with the question. Rainbow is formed due to dispersion refraction and internal reflection of sunlight in water droplets.

In concise terms, What is the unit of magnetic flux? — the scientifically appropriate response is Weber. Option-wise review: Weber is correct under the condition given in the stem. Tesla is incorrect because it describes a different quantity or phenomenon and does not meet the stated condition. Ampere is also incorrect; although it may be a valid physics term, its definition or application is not the one asked here. Gauss is incorrect because it fails the governing relation or characteristic relevant to this case. Identify the chapter, recall the exact definition or equation, check the unit or direction if applicable, and then eliminate choices that contradict it. Therefore, option C, Weber, is factually and logically consistent with the question. Magnetic flux is measured in Weber (Wb).

ition, law, relation, or working principle involved. In concise terms, Which law states that the pressure of a gas is inversely proportional to its volume at constant temperature? — the scientifically appropriate response is Boyle's Law. Option-wise review: Boyle's Law is correct under the condition given in the stem. Charles' Law is incorrect because it describes a different quantity or phenomenon and does not meet the stated condition. Avogadro's Law is also incorrect; although it may be a valid physics term, its definition or application is not the one asked here. Gay-Lussac's Law is incorrect because it fails the governing relation or characteristic relevant to this case. Therefore, option B, Boyle's Law, is factually and logically consistent with the question. Boyle's Law states PV = constant at constant temperature meaning P ∝ 1/V.

terms, What is Archimedes' principle related to? — the scientifically appropriate response is Buoyancy. Option-wise review: Buoyancy is correct under the condition given in the stem. Gravity is incorrect because it describes a different quantity or phenomenon and does not meet the stated condition. Friction is also incorrect; although it may be a valid physics term, its definition or application is not the one asked here. Magnetism is incorrect because it fails the governing relation or characteristic relevant to this case. Therefore, option B, Buoyancy, is factually and logically consistent with the question. Archimedes' principle states that a body immersed in fluid experiences an upward buoyant force equal to the weight of fluid displaced.

In concise terms, Which device converts mechanical energy into electrical energy? — the scientifically appropriate response is Generator. Option-wise review: Generator is correct under the condition given in the stem. Motor is incorrect because it describes a different quantity or phenomenon and does not meet the stated condition. Transformer is also incorrect; although it may be a valid physics term, its definition or application is not the one asked here. Battery is incorrect because it fails the governing relation or characteristic relevant to this case. Therefore, option C, Generator, is factually and logically consistent with the question. A generator converts mechanical energy into electrical energy using electromagnetic induction.

In concise terms, What is the time period of a simple pendulum proportional to? — the scientifically appropriate response is Square root of length. Option-wise review: Square root of length is correct under the condition given in the stem. Square of length is incorrect because it describes a different quantity or phenomenon and does not meet the stated condition. Length is also incorrect; although it may be a valid physics term, its definition or application is not the one asked here. Mass of bob is incorrect because it fails the governing relation or characteristic relevant to this case. Therefore, option A, Square root of length, is factually and logically consistent with the question. T = 2π√(L/g) so time period is proportional to square root of length.

In concise terms, Which colour of light has the highest frequency? — the scientifically appropriate response is Violet. Option-wise review: Violet is correct under the condition given in the stem. Red is incorrect because it describes a different quantity or phenomenon and does not meet the stated condition. Green is also incorrect; although it may be a valid physics term, its definition or application is not the one asked here. Yellow is incorrect because it fails the governing relation or characteristic relevant to this case. Therefore, option D, Violet, is factually and logically consistent with the question. Violet light has the highest frequency in the visible spectrum. Higher frequency means shorter wavelength.

In concise terms, What is the formula for gravitational potential energy? — the scientifically appropriate response is PE = mgh. Option-wise review: PE = mgh is correct under the condition given in the stem. For examination purposes, do not choose an option only because it sounds familiar. Therefore, option B, PE = mgh, is factually and logically consistent with the question. Gravitational PE = mgh where m is mass g is gravitational acceleration and h is height.