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Physics

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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.

A thickness of the film only

B nature of the film only

C angle of indidence only

D all thickness nature and angle of incidence

A sugar

B tartaric acid

C water

D sodium chlorate

A Convex lens

B Interferometer

C Diffraction grating

D Concave

A Interference

B Diffraction

C Polarization

D Refraction

A no interference fringes are observed

B no diffraction fringes are observed

C no fringes observed

D interference pattern not disturbed

A black

B purple

C green

D no scientific reasoning available

A radio waves

B ultraviolot rays

C X-rays

D sound waves

A vibration in all direction

B vibration in two mutually perpendicular directions

C vibration take place in a direction perpendicular to the direction of propagation of light

D no vibration at all

A 4 x 10-10 m

B 2 x 10-10 m

C 0.02×10-10m

D 20×10-10m

A 5000 nm

B 5000A

C 500m

D 2000um

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When light incident normally on thin film the path difference depends upon ________________?

Which is not optically active ?

Crystals of a material can behave as_________________?

In the shadow of a ball the central portion appears bright that happens due to_________________?

In double slit experiment if one of the two slit is covered then________________?

In monochromatic red light a blue book will probably appear to be_________________?

Which one of the following cannot be polarized ?

In a plane polarized light _________________?

Wavelength of X-rays falling at glancing angle of 30? on a crystal with atmic spacing 2 x 10-10 for the fist order diffraction is________________?

When one mirror of a Michelson Interferometer is moved a distance of 0.5 mm we observe 2000 fringes. What will be wavelength of light used ?