Physics 914 MCQs [All-Courses]

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.

The function of collimeter in spectrometer is________________?

A to produce parallel beams of light

B to filter the light rays

C to make them

D no function

Review Detailed Answer

Correct Answer: to produce parallel beams of light

An alpha particle is emitted from 88Ra226. What is the mass and atomic number of the daughter nucleus ?

A 224 – 84

B 220 – 80

C 222 – 86

D 226 – 87

Review Detailed Answer

Correct Answer: 222 – 86

Errors in the transmission of power through optic fiber can be minimized by using a______________?

A Multimode index fiber

B Graded index fiber

C Single mode step index fiber

D Copper wire

Review Detailed Answer

Correct Answer: Graded index fiber

Sum of the masses of constituent nucleons as compared to the mass of the resultant nucleus is______________?

A Smaller

B Greater than 82

C Same

D Sometimes smaller some times greater

Review Detailed Answer

Correct Answer: Greater than 82

Magnification of the astronomical telescope is_____________?

A fo+fe

B fo/fe

C fe/fo

D (1+fo/fe)L/fo

Review Detailed Answer

Correct Answer: fo/fe

A mass spectrograph (spectrometer) sorts out____________?

A Molecules

B Ions

C Elements

D Isotopes

Review Detailed Answer

Correct Answer: Elements

In optic fiber transmission system _____________ are used regenerate the dim light signal?

A Diodes

B Repeaters

C Laser

D Transformer

Review Detailed Answer

Correct Answer: Repeaters

Nuclei having the same mass number but different atomic number are____________?

A Isotopes

B Isobars

C Isotones

D Isomers

Review Detailed Answer

Correct Answer: Isobars

The value of critical angle for glass is_______________?

A 42°

B 47°

C 52°

D 50°

Review Detailed Answer

Correct Answer: 42°

Mass of neutron is________________?

A 1.67 x 10-31 kg

B 1.67 x 10-27 kg

C 9.1 x 10-31 kg

D 1.67 x 10-19 kg

Review Detailed Answer

Correct Answer: 1.67 x 10-27 kg

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Physics 914 MCQs [All-Courses]

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All Topics 914

The function of collimeter in spectrometer is________________?

An alpha particle is emitted from 88Ra226. What is the mass and atomic number of the daughter nucleus ?

Errors in the transmission of power through optic fiber can be minimized by using a______________?

Sum of the masses of constituent nucleons as compared to the mass of the resultant nucleus is______________?

Magnification of the astronomical telescope is_____________?

A mass spectrograph (spectrometer) sorts out____________?

In optic fiber transmission system _____________ are used regenerate the dim light signal?

Nuclei having the same mass number but different atomic number are____________?

The value of critical angle for glass is_______________?

Mass of neutron is________________?