All Free Physics MCQs with Answers
Every Physics question in the bank, across all chapters, each with the correct answer and a written explanation. Free and unlimited, with no account needed.
13,934 questions · page 657 of 697
- A. Wbm⁻¹
- B. Wbm
- C. Wbm-2
- D. Wb
Explanation: Option C is Correct, as it correctly represents Weber per square meter (Wb/m² or Tesla, T).
Correct answer: Wbm-2- A. NBA
- B. BA
- C. ½ NBA
- D. BAcos(θ)
Explanation: In this scenario we have to find the magnetic flux linkage. Since we already have the solenoid's wire being perpendicular to the field…
Correct answer: NBA- A. 360°
- B. 180°
- C. 90°
- D. 45°
Explanation: The magnetic flux is equal to the magnetic field strength times the area through which the field lines pass times the angle between the…
Correct answer: 360°- A. Circular
- B. Rectangular
- C. Square
- D. Flux is independent of shape
Explanation: The magnetic flux through a surface depends on the magnetic field strength and the angle between the magnetic field lines and the surface.
Correct answer: Flux is independent of shape- A. Electric flux
- B. Magnetic flux
- C. Electric flux density
- D. Gravitational flux
Explanation: Magnetic flux is a measure of the total magnetic field passing through a given area.
Correct answer: Magnetic flux- A. E2/4r
- B. E2/2r
- C. E2/5r
- D. E2/3r
Explanation: The Maximum Power Transfer Theorem in electrical circuits states that to transfer the maximum amount of power from a source (like a…
Correct answer: E2/4r13127. The cobalt is absorbed by:
- A. Bones
- B. Skin
- C. Liver
- D. Thyroid gland
Explanation: Cobalt is absorbed by the small intestine to the blood and later absorbed by the liver, as it is a core element of vitamin B12…
Correct answer: Liver- A. Blurry Area
- B. Bright Area
- C. Dark Area
- D. Red Area
Explanation: Explanation:A crack allows greater amount of X-rays to pass, which appears on photographic film as dark area.
Correct answer: Dark Area- A. Severe Crop Damage
- B. Decay of Microorganisms
- C. Sunburn, Blindness, Skin Cancer
- D. All of the above
Explanation: Explanation:Ultraviolet radiation can cause severe crop damage, decay of microorganisms, sunburn, blindness, and skin cancer.
Correct answer: All of the above- A. Radon
- B. Xenon
- C. Krypton
- D. Argon
Explanation: A is correct as radan has radioactive tendencies and is used as radiation therapy for cancer patients.The alpha particles emitted by the…
Correct answer: Radon- A. kJ / mol
- B. J / mol
- C. kg / J
- D. J / kg
Explanation: The absorbed dose is the amount of energy from ionizing radiation absorbed per unit mass of a material.
Correct answer: J / kg- A. Iodine-131
- B. Phosphorous-32
- C. Strontium-90
- D. Cobalt-60
Explanation: Radioiodine, 131I, has been used for the treatment of hyperthyroidism and metastases of well-differentiated thyroid carcinoma.
Correct answer: Iodine-13113133. Sodium-24 is used for:
- A. Sterilization
- B. Study of circulation of blood
- C. Skin Cancer
- D. Thyroid Cancer
Explanation: Na-24 is a radioisotope that is used to study the circulation of blood.
Correct answer: Study of circulation of blood- A. 1 Rad
- B. 1 Sievert
- C. 1 Yellow
- D. 1 Gray
Explanation: 1 Gray is the unit of absorbed radiation equal to the dose of one joule of energy absorbed per kilogram of matter, or 100 rad.
Correct answer: 1 Gray- A. Bones reflect greater number of X-rays
- B. Bones absorb a lower amount of X-rays
- C. Bones absorb greater number of X-rays
- D. Bones totally reflect X-rays
Explanation: X-rays are a technique used in radiography in which electromagnetic radiation differentially penetrates tissues inside the body and…
Correct answer: Bones absorb greater number of X-rays- A. Iron
- B. Nickel
- C. Brass
- D. Tungsten
Explanation: Most x-ray tube anodes are made of tungsten (the target material). Tungsten has a high atomic number (Z = 74) and a high melting point of…
Correct answer: Tungsten- A. 0.01
- B. 0.001
- C. 10
- D. 100
Explanation: The correct statement is D. 0.001. The relation between gray and rad is 1 Gy = 100 rad.
Correct answer: 100- A. 8.314 Jmol-1K-1
- B. 8.324 Jmol-1K-1
- C. 7.23 Jmol-1K-1
- D. 1.00 Jmol-1K-1
Explanation: The correct value of the universal gas constant is 8.314 J/mol·K, which is used in the ideal gas law equation PV=nRT.
Correct answer: 8.314 Jmol-1K-1- A. Linear acceleration is zero
- B. Angular acceleration is zero
- C. Linear acceleration is zero but angular acceleration is not zero
- D. Linear acceleration and angular acceleration both should be zero
Explanation: For a body to be in complete equilibrium, it must not experience any net force or torque.
Correct answer: Linear acceleration and angular acceleration both should be zero- A. 196 N
- B. 19.8 N
- C. 1.98 N
- D. 2 N
Explanation: 19.8 N: This option is the correct value for the tension 'T' when the elevator is descended with an acceleration of 0.1 m/s².
Correct answer: 19.8 N