Physics · JEE

Refraction of light at plane and spherical surfaces, thin lens formula and lens maker formula Mock Test for JEE

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Part of Optics in JEE Main Physics.

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Q1PhysicsUnit 16: Optics

The distance between an electric lamp and a screen is

d=1

m. A convergent lens of focal length

\boldsymbol{f}=21 \mathrm{cm}

is placed between the lamp and the lens such that a sharp image of the lamp filaments is formed on the screen. This question has multiple correct options

Q2PhysicsUnit 16: Optics

A student focussed the image of a candle flame on a white screen using a convex lens. He noted down the position of the candle screen and the lens as under: Position of candle

=12.0 \mathrm{cm}

Position of convex lens

=\mathbf{5 0 . 0} \mathrm{cm}

Position of the screen

=88.0 \mathrm{cm}

What will be the nature of the image formed if he further shifts the candle towards the lens?

Q3PhysicsUnit 16: Optics

Astigmatism for a human eye can be removed by using an additional:

Q4PhysicsUnit 16: Optics

An object is placed at

40 \mathrm{cm}

from the optic centre of a convex lens on its principal axis. if the focal length of the lens is

24 \mathrm{cm}

, find how far from the lens the screen should be placed to obtain a well-defined image.

Q5PhysicsUnit 16: Optics

White light is incident normally on a glass slab. Inside the glass slab,

Q6PhysicsUnit 16: Optics

Three lenses in contact have a combined focal length of

12 \mathrm{cm}

. When the third lens is removed the combined focal length becomes

60 \mathrm{cm}

. The third lens is :

Q7PhysicsUnit 16: Optics

The term refraction of light is best described by:

Q8PhysicsUnit 16: Optics

A diverging meniscus lens of 1.5 refractive index has concave surface of radii 3 and 4 cm.The position of the image, if an object is placed

12 \mathrm{cm}

in front of the lens, is

Q9PhysicsUnit 16: Optics

When an object is placed between optical centre and focus of lens:

Q10PhysicsUnit 16: Optics

Assertion Although the surfaces of goggle lenses are curved, it does not have any power Reason In case of goggle, both the curved surfaces have equal radii of curvature and have center of curvature on the same side

Q11PhysicsUnit 16: Optics

A flim projector magnifies a flim of area 100 square centimeter on screen. If linear magnification is 4 then area of magnified image on screen will be-

Q12PhysicsUnit 16: Optics

Higher the refractive index of a medium

Q13PhysicsUnit 16: Optics

Dispersion of light is caused due to

Q14PhysicsUnit 16: Optics

A needle of length

5 \mathrm{cm},

placed

45 \mathrm{cm}

from a lens form an image on a screen placed

90 \mathrm{cm}

on the other side of the lens. The type of lens and its focal length are :

Q15PhysicsUnit 16: Optics

What kind of lens is there in our eyes?

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