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# MCQ in Physics Part 13 | ECE Board Exam

This is the Multiples Choice Questions Part 13 of the Series in Physics as one of the General Engineering and Applied Sciences (GEAS) topic. In Preparation for the ECE Board Exam make sure to expose yourself and familiarize in each and every questions compiled here taken from various sources including past Board Questions in General Engineering and Applied Sciences (GEAS), Physics Books, Journals and other Physics References.

#### Continue Practice Exam Test Questions Part 13 of the Series

Choose the letter of the best answer in each questions.

601. When the principal focus is between object and lens.

a) primary

b) focal length

c) real image

d) virtual image

Explanation:

602. When object is between lens and principal focus.

a) converging lens

b) focal length

c) real image

d) virtual image

Explanation:

603. A type of lens which causes a set of parallel rays to converge after passing through the lens

a) converging lens

b) diverging lens

c) real image

d) virtual image

Explanation:

604. A lens that causes parallel rays to diverge after refraction.

a) converging lens

b) diverging lens

c) real image

d) virtual image

Explanation:

605. It only produces a virtual image of any object regardless of position.

a) converging lens

b) first surface

c) diverging lens

d) diverging image

Explanation:

606. The defect of a lens by which rays entering near the edge of the lens are brought to a focus nearer the lens than the rays that enter near the center.

a) coma

b) distortion

c) astigmatism

d) spherical aberration

Explanation:

607. A form of lateral spherical aberration whereby rays from object points not on the principal axis are focused in a comet-shaped image.

a) coma

b) distortion

c) astigmatism

d) spherical aberration

Explanation:

608. Caused by variations in the magnification of the outermost portion of the image, resulting in a barrel-shaped or pin-cushion-shaped images of a square- mesh object.

a) coma

b) distortion

c) astigmatism

d) spherical aberration

Explanation:

609. The defect whereby horizontal and vertical lines are brought to a focus at different distances.

a) coma

b) distortion

c) astigmatism

d) spherical aberration

Explanation:

610. The adjustment of the eye for seeing at different distances.

a) hyperopia

b) accommodation

c) myopia

d) magnifier

Explanation:

611. The inability of the eye to clearly see distant objects.

a) hyperopia

b) accommodation

c) myopia

d) magnifier

Explanation:

612. The difficulty of the eye to focus on very close object.

a) hyperopia

b) accommodation

c) myopia

d) magnifier

Explanation:

613. A converging lens use to produce an enlargement effect.

a) hyperopia

b) accommodation

c) myopia

d) magnifier

Explanation:

614. Ratio of the angle subtended at the eye by the image to the angle subtended by the object.

a) angular vision

b) angular modulation

c) angular displacement

d) angular magnification

Explanation:

615. The variation of the index of refraction with the wavelength of light.

a) angular dispersion

b) optical dispersion

c) circular dispersion

b) none of these

Explanation:

616. Produces deviation without dispersion.

a) prism spectroscope

b) fluorescence

c) achromatic prism or lens

d) chromatic aberration

Explanation:

617. Light rays of different wave lengths originating from a common point are brought to different foci by a lens.

a) prism spectroscope

b) fluorescence

c) achromatic prism or lens

d) chromatic aberration

Explanation:

618. A combination of a prism an achromatic lenses. Used to separate the various wavelengths in a beam of light into its spectrum.

a) prism spectroscope

b) fluorescence

c) achromatic prism or lens

d) chromatic aberration

Explanation:

619. A process in which substance absorbs radiant energy and remits it in wavelengths, different from those absorb.

a) phosphorescence

b) fluorescence

c) achromatic prism or lens

d) chromatic aberration

Explanation:

620. Occurs when the process of fluorescence continues after the exciting radiation is removed.

a) phosphorescence

b) fluorescence

c) achromatic prism or lens

d) chromatic aberration

Explanation:

621. The science that seeks to relate the human sense of color perception to the physical light stimulus in such a way as to produce practical graphical and numerical specification of color.

a) colorimetry

b) color characterization

c) chief spectral hues

d) complementary beams

Explanation:

622. Hue, saturation, brightness, or lightness of a color.

a) primaries

b) characteristic of color

c) chief spectral hues

d) complementary beams

Explanation:

623. What hue does the color violet, blue, green, yellow, orange, and red belong?

a) primaries

b) color characterization

c) chief spectral hues

d) complementary beams

Explanation:

624. Monochromatic or polychromatic pairs which when in proper proportions produce the sensation of white.

a) primaries

b) color characterization

c) chief spectral hues

d) complementary beams

Explanation:

625. Any three beams having wavelengths near the two extremes and the middle of spectrum. These beams when added in correct proportions produce the sensation of white.

a) primaries

b) color characterization

c) chief spectral hues

d) chromaticity coordinates

Explanation:

626. Specification of color quantitatively in terms of relative amounts of three artificial primaries necessary to produce a visual equivalent of that color.

a) primaries

b) color characterization

c) chief spectral hues

d) chromaticity coordinates

Explanation:

627. Interference fringes formed in air films between optical surfaces. The spacing of the rings provide a sensitive means of measuring

a) constructive interference

b) Michelson interferometer

c) destructive interference

d) Newtonโs ring

Explanation:

628. An instrument that uses interference in the measurement of light wavelengths.

a) Constructive interference

b) Michelson interferometer

c) Destructive interference

d) Newtonโs ring

Explanation:

629. The spreading of light into the region behind an obstacle.

a) interference

b) diffraction

c) destructive interference

d) Newtonโs ring

Explanation:

630. The process by which the vibrations of a wave motion are confined to a definite pattern.

a) polarization

b) Maluโs law

c) angle of polarization

d) Newtonโs ring

Explanation:

631. Angle at which light reflected from a substance is almost completely planed polarized.

a) polarization

b) Maluโs law

c) angle of polarization

d) angular displacement

Explanation:

632. Instrument for measuring optical rotation.

a) polarization

b) Maluโs law

c) polarimeters

d) light meter

Explanation:

633. A branch of physics that deals with the properties of electricity at rest.

a) electrical

b) electrostatics

c) electrification

d) magnetism

Explanation:

634. The process of rubbing two materials together and then separating them to produce charge on the materials.

a) energy convention

b) electrostatics

c) electrification

d) magnetism

Explanation:

635. Bodies of similar charges repel and bodies of unlike charges attract.

a) first law of electrostatics

b) second law of electrostatics

c) third law of electrostatics

d) fourth law of electrostatics

Explanation:

636. What charges will be produce if you rub glass rod with silk.

a) positive charge

b) negative charge

c) neutral

d) none of these

Explanation:

637. What charges will be produce if you rub rubber rod with fur.

a) positive charge

b) negative charge

c) neutral

d) none of these

Explanation:

638. The rubbing of an objects does not create energy but merely changes the electrical neutrality of the substance in contact.

a) first law of electrostatics

b) second law of electrostatics

c) law of conservation of charge

d) Newtonโs law

Explanation:

639. Small, tightly packed, positively charged mass that consist of protons and neutrons.

a) electrons

b) neutrons

c) nucleus

d) free electron

Explanation:

640. Negatively charged particles.

a) electrons

b) neutrons

c) nucleus

d) free electron

Explanation:

641. Positive charges particles in the nucleus.

a) neutrons

b) proton

c) insulator

d) free electron

Explanation:

642. Particles that carry no charges.

a) neutrons

b) proton

c) insulator

d) free electron

Explanation:

643. Removed from an atom or atoms due to the influence of nearby atoms.

a) neutrons

b) proton

c) insulator

d) free electron

Explanation:

644. A substance with very few free electrons.

a) neutrons

b) proton

c) insulator

d) semiconductor

Explanation:

645. Materials that are ordinarily insulators but which become conductors when under particular conditions.

a) neutrons

b) proton

c) insulator

d) semiconductor

Explanation:

646. A device for studying electrostatic phenomena. Consist of very light gold leaf, or other thin metal foil, hanged from a contact on a flat metal plate which ends in a ball at the upper end.

a) electroscope

b) leaf electroscope

c) force scope

d) gold scope

Explanation:

647. A point charged that is repelled by a force of one dyne when place one cm. from an equal charged.

a) statcoulomb

b) coulomb

c) partlycoulomb

d) none of these

Explanation:

648. The charged transferred through any cross section of a conductor in one second by a constant current of one ampere.

a) statcoulomb

b) coulomb

c) partlycoulomb

d) none of these

Explanation:

649. A region in which a charge will be subjected to a force

a) electric field

b) electric field intensity

c) magnetic field

d) magnetic field intensity

Explanation:

650. A line so drawn in an electric field such that a tangent to it at any point gives the direction of the electric field at that point.

a) electric field line

b) electric field intensity

c) line of force

d) tangent line

Explanation:

#### Online Questions and Answers in Physics Series

Following is the list of practice exam test questions in this brand new series:

College Physics MCQs
PART 1: MCQ from Number 1 โ 50                        Answer key: PART 1
PART 2: MCQ from Number 51 โ 100                   Answer key: PART 2
PART 3: MCQ from Number 101 โ 150                 Answer key: PART 3
PART 4: MCQ from Number 151 โ 200                 Answer key: PART 4
PART 5: MCQ from Number 201 โ 250                 Answer key: PART 5
PART 6: MCQ from Number 251 โ 300                 Answer key: PART 6
PART 7: MCQ from Number 301 โ 350                 Answer key: PART 7
PART 8: MCQ from Number 351 โ 400                 Answer key: PART 8
PART 9: MCQ from Number 401 โ 450                 Answer key: PART 9
PART 10: MCQ from Number 451 โ 500                 Answer key: PART 10

Complete List of MCQs in General Engineering and Applied Science per topic

Series of MCQ in General Engineering and Applied Science

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