MCQs

Q531: Ultrasound has several uses in medicine and industry. Which one has use of ultrasound?

• A) Absorption
• B) Pre-natal scanning
• C) Dispersion

Q532: The order of speed of the sound in different mediums from faster to slowest is ______?

• A) Gas → Liquid → Solid
• B) Liquid → Solid → Gas
• C) Solid → Liquid → Gas

Q533: The two factors that affect the speed of sound in air are ______?

• A) Humidity and volume of the air
• B) Temperature and mass of the air
• C) Temperature and humidity of the air

Q534: اس سوال کو وضاحت کے ساتھ پڑھیں Sound travel faster in solid as compare to gases because of ______?

• A) Gas molecules are packed loosely
• B) Sound does not travel faster through a solid than a gas
• C) Solid molecules are packed tightly

Q535: Sound is a form of _____?

• A) Electrical energy
• B) Thermal energy
• C) Mechanical energy

Q536: Oscillations are damped due to the presence of ______?

• A) Linear motion
• B) Restoring force
• C) Frictional force

Q537: In the ball and bowl system, the mean position is at ______?

• A) The earth
• B) Floor of the bowl
• C) Center of bowl

Q538: In an oscillating pendulum, the bob accelerates from its extreme position due to ______?

• A) Inertia
• B) Tension in the string
• C) Gravitational force

Q539: When an oscillating object is in simple harmonic motion, its maximum speed occurs when the object is at its _____?

• A) Highest point
• B) Lowest point
• C) Equilibrium point

Q540: Which of the following is not a characteristic of a wave?

• A) Period
• B) An amplitude
• C) Mass