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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.

When a force is parallel to the direction of motion of the body, then work done on the body is_____________________?

A zero

B minimum

C infinity

D maximum

Review Detailed Answer

Correct Answer: maximum

Which experiment shows that wavelength of light is smaller than that of sound___________________?

A Diffraction

B Polarization

C Interference

D Reflection

Review Detailed Answer

Correct Answer: Diffraction

Gives the definition of metre in terms of wavelength of red cadmium light ___________________?

A Newton

B Einstein

C Michelson

D Galileo

Review Detailed Answer

Correct Answer: Michelson

A thing that emits its own light is___________________?

A luminous

B non-luminous

C incandescent

D bright

Review Detailed Answer

Correct Answer: luminous

Diffraction fringes are____________________?

A equally spaced

B distance between them increases

C distance between then decreases

D they are adjacent with no space in between

Review Detailed Answer

Correct Answer: distance between then decreases

Light on passing through a Polaroid is ___________________?

A plane polarized

B un-polarized

C circularly polarized

D elliptically polarized

Review Detailed Answer

Correct Answer: plane polarized

A diffraction grating has 500 lines per mm. Its slit spacing or grating element will be equal to ____________________?

A 500 mm

B 5 x 10-3 mm

C 2 x 10-5 mm

D 2 x 10-3 mm

Review Detailed Answer

Correct Answer: 2 x 10-3 mm

Diffraction effect is____________________?

A more for a round edge

B less for a round edge

C more for a sharp edge

D less for a sharp edge

Review Detailed Answer

Correct Answer: more for a sharp edge

A light ray traveling form rarer to denser medium suffers a phase change of__________________?

A 60°

B 90°

C 180°

D 45°

Review Detailed Answer

Correct Answer: 180°

appearance of colour in thin films is due to ____________________?

A diffraction

B dispersion

C interference

D polarization

Review Detailed Answer

Correct Answer: interference

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Physics 914 MCQs [All-Courses]

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All Topics 914

When a force is parallel to the direction of motion of the body, then work done on the body is_____________________?

Which experiment shows that wavelength of light is smaller than that of sound___________________?

Gives the definition of metre in terms of wavelength of red cadmium light ___________________?

A thing that emits its own light is___________________?

Diffraction fringes are____________________?

Light on passing through a Polaroid is ___________________?

A diffraction grating has 500 lines per mm. Its slit spacing or grating element will be equal to ____________________?

Diffraction effect is____________________?

A light ray traveling form rarer to denser medium suffers a phase change of__________________?

appearance of colour in thin films is due to ____________________?