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PHY 107 - General Practical Physics I

PHY 107 - General Practical Physics I

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Mass is a scalar quantity that measures:

The force applied to an object

The amount of matter in an object.

The rate of change of velocity

The displacement of an object

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In seismographs, pendulums are used to:

Seismographs use pendulums to detect and record ground motion caused by seismic waves generated by earthquakes or other sources. When the ground shakes, the seismograph's pendulum remains relatively stationary due to inertia, while the Earth moves beneath it.

Keep time in clocks

Measure earthquake magnitude using GPS.

Measure the strength of gravity.

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What does the coefficient of friction depend on?

The object’s displacement

The mass of the object.

The object's acceleration

The nature of the surfaces in contact

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What is one practical application of the ballistic pendulum?

Measuring the muzzle velocity of firearms

Studying the interaction of projectiles with a medium

Analysing the trajectory of a projectile

Determining the mass of a projectile

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What is density?

The force exerted on an object due to gravity

The amount of space occupied by an object or substance

The mass per unit volume of a substance

The measure of the heaviness of an object

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Virtual images are always formed by which type of lens?

Concave lens

Convex lens

Plano-convex lens

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What is the significance of personal protective equipment (PPE) in the laboratory?

It ensures accurate measurements of physical quantities

It helps in organising and tabulating experimental data.

Personal Protective Equipment (PPE) protects students from potential hazards and ensures safety.

It enhances problem-solving abilities in physics.

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How does taking multiple measurements and averaging them help reduce errors?

It increases the precision of measurements.

Multiple measurements help reduce the effect of random uncertainty

It eliminates systematic errors.

It eliminates all sources of uncertainty

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What is a limitation of Hooke's Law?

It doesn't apply to springs

It doesn't apply to materials

It assumes a linear relationship between force and deformation

It only applies to compressive deformations

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What is the zero error in a micrometre screw gauge?

A deviation or offset in the zero reading is a zero error

Inaccuracy in the main scale reading.

Measurement error due to parallax.

Error caused by improper alignment

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