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Optical Instruments MCQ Test

In this article, we are going to Physics MCQ – Optical Instruments MCQ Test. You can check all question on below.

Optical Instruments MCQ Test

Optical Instruments MCQ Test
Optical Instruments MCQ Test

Q. Point from where optic nerve starts:

(A) optical spot
(B) yellow spot
(C) blind spot
(D) iris

Q. Images are formed by eye lens at:

(A) retina
(B) pupil
(C) iris
(D) blind spot

Q. Transparent membrane which covers the eye:

(A) iris
(B) cornea
(C) optical membrane
(D) mucous membrane

Q. Cone cells in retina respond to:

(A) the intensity of light
(B) the frequency· of light
(C) colour of light
(D) wavelength of light

Q. Image formed on the retina is:

(A) real and erect
(B) virtual and erect
(C) virtual and inverted
(D) real and inverted

Q. Power of eye lens of an adult human being is:

(A) 3D
(B) 4D
(C) 5D
(D) 6D

Q. Eye defect produced due to the low converging power of eye lens:

(A) Hypermetropia
(B) presbyopia
(C) Astigmatism
(D) myopia

Q. The person which are involved with a lot of reading work usually suffer from:

(A) Hypermetropia
(B) presbyopia
(C) Astigmatism
(D) myopia

Q. In a simple microscope to obtain higher magnification focal length of the convex lens should be:

(A) large
(B) small
(C) 1 cm
(D) none of these

Q. Least distance of distinct vision in adults human being:

(A) 0.50 m
(B) 0.75 m
(C) 0.25 m
(D) 2.5 m

Q. In a compound microscope convex lens of shorter focal length is called:

(A) eyepiece lens
(B) objective lens
(C) magnifying lens
(D) none of these

Q. An inverted image of the object is formed in:

(A) simple microscope
(B) compound microscope
(C) astronomical telescope
(D) both(b) and (c)

Q. If the focal length of the convex lens used in the simple microscope is 25 cm then magnification will be:

(A) 2
(B) 2.5
(C) 3.5
(D) 3

Q. Unit of magnification is:

(A) metre
(B) diopter
(C) m-1
(D) no units

Q.  A converging lens:

(A) concentrates light rays at a point
(B) reflects light rays from a point
(C) has no effect on path of light
(D) all of these

Q. Far point for the eye in humans is:

(A) at 25 cm
(B) at 25 m
(C) at 50 m
(D) at infinity

Q. In a simple microscope to get an erect and enlarged image object should be placed:

(A) between focus and 2F
(B) beyond 2F
(C) between optical centre & focus
(D) at infinity

Q. f0 stands for:

(A) focal length of objective lens
(B) the focus of eyepiece lens
(C) focus of objective lens
(D) focal length of eyepiece lens

Q. In retina cells responding to the intensity of light are:

(A) cone cells
(B) rod cells
(C) ciliary cells
(D) none of these

Q. Pupil is a part of:

(A) eyelens
(B) cornea
(C) retina
(D) iris

Q. Devices used to see a very very small object is called:

(A) simple microscope
(B) compound microscope
(C) telescope
(D) mirror

Q. Simple microscope is called so because of its very simple construction.only:

(A) one convex lens is used
(B) two convex lenses are used
(C) one concave lens is used
(D) two conacve lenses are us

Q. The lens system facing towards the object is called

(A) eye piece
(B) lens
(C) objective
(D) none of these

Q. Lens near our eye is called:

(A) objective
(B) Eyepiece
(C) lens combination
(D) none of these

Q. In compound microscope ……………..lens systems are used:

(A) 1
(B) 2
(C) 3
(D) 4

Q. Focal length of the convex lens used in the simple microscope is:

(A) very large
(B) large
(C) short
(D) medium

Q. Magnification of simple microscope is given by M=

(A) 1+f/d
(B) d/1+f
(C) 1/f+d
(D) 1+d/f

Q. In simple microscope object is planed at points:

(A) between lens and its focus point
(B) between F and 2F
(C) beyond 2F
(D) anywhere

Q. Eyepiece of compound microscope should have:

(A) large focal length and large aperture
(B) short focal length and short aperture
(C) short focal length and large aperture
(D) large focal length and short aperture

Q. Image formed in simple microscope is:

(A) erect
(B) inverted
(C) smaller then object
(D) very shining

Q. Final image formed in compound microscope is:

(A) erect
(B) inverted
(C) between lens and distance of distinct vision
(D) none of these

Q. Magnifying power of compound microscope is:

(A) f0xfe
(B) fo/fe
(C) fe/fo
(D) 1/foxfe

Q. Find image in astronomical telescope is:

(A) erect
(B) inverted
(C) sometimes erected and sometime inverted
(D) can not say

Q. Objective of telescope is of:

(A) short focal length and short aperture
(B) short focal length and large aperture
(C) large focal length and short aperture
(D) large focal length and large aperture

Q. Eyepiece of a telescope is of:

(A) small aperture and short focal length
(B) large aperture and short focal length
(C) small aperture and large focal length
(D) large aperture and large focal length

Q. M for telescope is given by M=

(A) foxfe
(B) foxfe
(C) fexfo
(D) foxfe

Q. Instrument used for seeing distant objects on earth is called:

(A) simple microscope
(B) compound microscope
(C) Astronomical telescope
(D) terrestrial telescope

Q. In terrestrial telescope lenses used are:

(A) 1
(B) 2
(C) 3
(D) 4

Q. In normal adjustment final image in astronomical focal length is:

(A) least distance of distinct vision
(B) at infinity
(C) at 2F
(D) at eyepiece

Q. Magnifying power of simple microscope when image is formed at infinity is given by M=

(A) D/f
(B) f/D
(C) D.f
(D) 1/d.f

Q. The human eye forms image of an object at its:

(A) cornea
(B) pupil
(C) iris
(D) retina

Q. The least distance of distinct vision for a young adult with normal vision is:

(A) 25m
(B) 25cm
(C) 2.5m
(D) 2.5cm

Q. Which is not a primary color of light?

(A) Red
(B) green
(C) yellow
(D) blue

Q. The human eye can focus object at different distances by adjusting the focal length of the eye lens.This is due to:

(A) presbyopia
(B) accommodation
(C) nearsightedness
(D) farsightedness

Q. The change in focal length of an eye lens is caused by the action of the:

(A) pupil
(B) retina
(C) ciliary muscles
(D) iris

Q. The far point of a myopic person is 80 cm in front of the eye.What is power lens required to correct the problem?

(A) -1.25D
(B) 1.25D
(C)  -1.20D
(D) 1.20D

Q. What happens to the image distance in the eye when we increase the distance of an object from the eye?

(A) increases
(B) decreases
(C) remains constant
(D) nothing can be said

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