M C Q s D r i v e

Physics 914 MCQs [All-Courses]

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Physics is a core science subject that deals with the study of matter, energy, motion, force, heat, light, electricity, magnetism, and modern physics concepts. It plays a vital role in competitive exams such as PPSC, FPSC, NTS, OTS, KPPSC, BPSC, AJKPSC, CSS, and PMS, where questions test conceptual understanding, numerical problem-solving, and application of laws and formulas. 

When X-rays are passed through successive aluminum sheets what happens to their thickness ?
A increases
B it decreases
C it remains same
D sometimes increases and sometimes decreases
Correct Answer: it remains same
X-rays are electromagnetic waves like________________?
A Light waves
B Heat waves
C Microwaves
D γ-rays
Correct Answer: γ-rays
X-rays are similar in nature to_______________?
A Cathode rays
B Positive rays
C γ-rays
D Beta rays
Correct Answer: γ-rays
The most useful tracer is_________________?
A Sr-90
B I-131
C CA-41
D C-14
Correct Answer: C-14
In an electronic transition atom cannot emit______________?
A γ-rays
B Infra red radiation
C Visible light
D Ultraviolet rays
Correct Answer: γ-rays
Which one of the following possesses greater penetration power ?
A α-rays
B β-rays
C γ-rays
D Neutron-rays
Correct Answer: Neutron-rays
Radiation with wavelength longer than red lights______________?
A ultraviolet rays
B X-rays
C infra red radiation
D visible radiation
Correct Answer: infra red radiation
Average distance covered by alpha particles in the air before its ionizing power ceases is called its_________________?
A Trajectory
B Range
C Firing level
D Limit
Correct Answer: Range
Reverse process of photoelectric effect is_______________?
A pair production
B Compton effect
C annihilation of matter
D X-rays production
Correct Answer: X-rays production
CFC is used in _________________?
A Refrigeration
B Aerosol spray
C Plastic foam industry
D All of above
Correct Answer: All of above