Q. Which of the following statements is true according to Newton's first law?
-
A.
An object at rest stays at rest unless acted upon by a net force.
-
B.
Force equals mass times acceleration.
-
C.
For every action, there is an equal and opposite reaction.
-
D.
Energy cannot be created or destroyed.
Solution
Newton's first law states that an object at rest stays at rest and an object in motion stays in motion unless acted upon by a net force.
Correct Answer:
A
— An object at rest stays at rest unless acted upon by a net force.
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Q. Which of the following statements is true according to Newton's third law?
-
A.
For every action, there is an equal and opposite reaction.
-
B.
Force equals mass times acceleration.
-
C.
An object in motion stays in motion.
-
D.
Mass and weight are the same.
Solution
Newton's third law states that for every action, there is an equal and opposite reaction.
Correct Answer:
A
— For every action, there is an equal and opposite reaction.
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Q. Which of the following statements is true regarding the conservation of momentum in a rigid body system?
-
A.
Momentum is conserved only in elastic collisions
-
B.
Momentum is conserved in all types of collisions
-
C.
Momentum is not conserved in inelastic collisions
-
D.
Momentum is conserved only in isolated systems
Solution
Momentum is conserved in isolated systems, regardless of the type of collision.
Correct Answer:
D
— Momentum is conserved only in isolated systems
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Q. Which optical instrument uses a concave mirror and a convex lens to magnify images?
-
A.
Telescope
-
B.
Microscope
-
C.
Camera
-
D.
Projector
Solution
A microscope uses a concave mirror and a convex lens to magnify small images.
Correct Answer:
B
— Microscope
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Q. Which optical instrument uses a concave mirror and a convex lens?
-
A.
Telescope
-
B.
Microscope
-
C.
Camera
-
D.
Projector
Solution
A telescope typically uses a combination of a concave mirror and a convex lens to gather and focus light.
Correct Answer:
A
— Telescope
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Q. Which optical instrument uses refraction to magnify objects?
-
A.
Telescope
-
B.
Periscope
-
C.
Microscope
-
D.
All of the above
Solution
All of these instruments use refraction to magnify objects.
Correct Answer:
D
— All of the above
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Q. Which particle is responsible for the strong nuclear force?
-
A.
Proton
-
B.
Neutron
-
C.
Electron
-
D.
Gluon
Solution
Gluons are the exchange particles that mediate the strong nuclear force between quarks, which make up protons and neutrons.
Correct Answer:
D
— Gluon
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Q. Which phenomenon explains the bending of light around obstacles?
-
A.
Reflection
-
B.
Refraction
-
C.
Diffraction
-
D.
Interference
Solution
Diffraction is the bending of waves around obstacles and openings.
Correct Answer:
C
— Diffraction
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Q. Which phenomenon explains the bending of light when it passes through a prism?
-
A.
Reflection
-
B.
Refraction
-
C.
Diffraction
-
D.
Interference
Solution
Refraction is the phenomenon that explains the bending of light as it passes through different media, such as a prism.
Correct Answer:
B
— Refraction
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Q. Which phenomenon occurs when light passes through a narrow slit and spreads out?
-
A.
Reflection
-
B.
Refraction
-
C.
Diffraction
-
D.
Interference
Solution
Diffraction is the bending of waves around obstacles and openings.
Correct Answer:
C
— Diffraction
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Q. Which phenomenon occurs when light waves pass through a narrow slit?
-
A.
Reflection
-
B.
Refraction
-
C.
Diffraction
-
D.
Interference
Solution
Diffraction occurs when light waves encounter an obstacle or slit that is comparable in size to their wavelength.
Correct Answer:
C
— Diffraction
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Q. Which process describes the transfer of heat through a fluid due to density differences?
-
A.
Conduction
-
B.
Convection
-
C.
Radiation
-
D.
Insulation
Solution
Convection describes the transfer of heat through a fluid (liquid or gas) due to density differences caused by temperature variations.
Correct Answer:
B
— Convection
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Q. Which process describes the transfer of heat through a fluid due to the movement of the fluid itself?
-
A.
Conduction
-
B.
Convection
-
C.
Radiation
-
D.
Diffusion
Solution
Convection is the process of heat transfer through the movement of fluids, where warmer fluid rises and cooler fluid sinks.
Correct Answer:
B
— Convection
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Q. Which type of interference occurs when two waves are in phase?
-
A.
Destructive
-
B.
Constructive
-
C.
Partial
-
D.
Total
Solution
Constructive interference occurs when two waves are in phase, resulting in a wave of greater amplitude.
Correct Answer:
B
— Constructive
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Q. Which type of polarization occurs when waves vibrate in a single plane?
-
A.
Circular polarization
-
B.
Linear polarization
-
C.
Random polarization
-
D.
Unpolarized light
Solution
Linear polarization occurs when waves vibrate in a single plane.
Correct Answer:
B
— Linear polarization
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Q. Which type of wave can be polarized?
-
A.
Longitudinal waves
-
B.
Transverse waves
-
C.
Surface waves
-
D.
All of the above
Solution
Only transverse waves can be polarized, as they oscillate perpendicular to the direction of wave propagation.
Correct Answer:
B
— Transverse waves
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Q. Which type of wave requires a medium for propagation?
-
A.
Electromagnetic waves
-
B.
Sound waves
-
C.
Light waves
-
D.
Radio waves
Solution
Sound waves are mechanical waves that require a medium (solid, liquid, or gas) to propagate.
Correct Answer:
B
— Sound waves
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Q. Which type of wave requires a medium to travel through?
-
A.
Electromagnetic waves
-
B.
Sound waves
-
C.
Light waves
-
D.
Radio waves
Solution
Sound waves are mechanical waves that require a medium (solid, liquid, or gas) to propagate.
Correct Answer:
B
— Sound waves
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