PPSC Physics Chapter 4 Geometrical Optics With Answers

image
image
image

PPSC Physics Chapter 4 Geometrical Optics

Sr. # Questions Answers Choice
1 Which of the following are defects in human eye. Myopia Hypermetropia Presbyopia All of these
2 In water drops rainbows are formed by Reflection Refraction Dispersion All of these
3 The blooming of the image due to dispersion in lenses is called. spherical aberration Chromatic aberration Astigmation Curvature of image field
4 Power of lens is measured in cm Metres cm-1 Dioptres
5 Which of the following is used for the failure of a lens to form a sharp and distinct image. Distortion Astrigmation Chromatic aberration spherical aberration
6 Which of the following is used for the failure of a lens to form a sharp and distinct image Distortion Astigmation Chromatic aberration Spherical aberration
7 Which Muslim Scientist is regarded as 'Father of Optics" Nasir al Din al Tusi Ibn Ishaq al kundi Ibn Musa Al khawarzmi Ibn al Haithem
8 Which of the following is used for reducing spherical aberrations in optical instruments. Plano convex lens Concave lens Spherical mirrors Piane mirrors
9 Which Muslim Scientist gave the first clear description and correct analysis of pinhole camera. Nasir al Din Al tusi Ibn al Haithem Ibn Ishaqal kundi al -Khawarizmi
10 The resolving power of an instrument increases as the wavelength of light used decreases, the magnifying power will Remain the same Increases Decreases Have no relation between the two
11 When we decrease the diameter of the objective lens of a telescope the resolution of telescope Increases Decreases Remain the same Depends upon the focal length of the lens
12 A direct vision spectroscope is better than a prism spectrometer because it helps in Observing the spectrum without a source Observing the spectrum perpendicular to a source Observing the spectrum in line with the source all of the above
13 In a compound microscope objective lens acts as a projector and eye place as a Compensator Erecting lens Simple microscope lens Turntable
14 Larger the diameter of the objective of a telescope. Greater is its resolving power Lesser is its resolving power Lesser is its magnifying power greater is its magnifying power
15 Human's eye acts like a LASER Mirror Lens Fibre optics
16 Which of the following is a transport optical element with flat polished surfaces that refract light. Monocole Axicon Prism Lens
17 Lenses of what diameter are usually not practical. Less than 1 m Larger than 1m Larger than 5 m Larger than 10 m
18 In optics, which subfield studies the measurement of electromagnetic radiation including visible light. Radiometry Photometry Telemetry Chronometry
19 When a ray of light enters a glass slab from air Its frequency increases Its wavelength increases Neither frequency nor wavelength change Its wavelength decreases
20 Two lenses of focal length 'f' are combined the resultant focal length is f 2f f/2 zero
Download This Set

Is this page helpful?

×