Question

Um the
Sece of thin
St surface
sas
dangesig
JGKT
ne passing thro
qure 24{a), Cis
line XY, pasir
principal axis
(a) 4:1
Lens
Image
example
Heavy lenses are hard to make and difficult to hold in the right place
Which colour of the rainbow you will suggest to be used as
Also since the light is passing through the lens, the surface of the lena
has to be extremely smooth Any flaws in the lens will change the image
Or,
Name the law that explains the scattering of light
It would be like looking through a dirty window
6.
Read the following and answer any four questions from 6(1)
91) Based on the descometown, what kind oflenses would Sumati nood
6(V):
(a) Concave lenses
(6) Convex lenses
Sumati wanted to see the stars of the night sky. She knows that
(©) Bifocal lenses
(d) Flat lenses
needs a telescope to see those distant stars. She finds out that
67) If the powers of the lenses L, and hy are in the ratio of 4:1, what would
telescopes, which are made oflenses, are called refracting telescop
be the ratio of the focal length of L, and L_?
and the ones which are made of mirrors are called reflecting telescop
(6) 1:4
(C) 2-1
(d) 1:1
Gin) What is the formula for magnification obtained with a lens ?
(a) Ratio of height of image to height of object
(6) Double the focal length
(C) Inverse of the radius of curvature
(d) Inverse of the object distance
6.) Sumati did some preliminary experiment with the lenses and found out
that the magnification of the eyepiece (Lois 3. Ifin her experiment with
L, she found an image at 24 cm from the lens at what distance did she
put the object?
(a) 72 cm (6) 12 cm
So she decided to make a refracting telescope. She bought two lenses
(C) 8 cm (d) 6 cm
L, and L. Out of which, was bigger and L, was smaller. The large
6.v) Sumati bought not-so-thick lenses for the telescope and polished them.
lens gathers and bends the light, while the smaller lens magnifies the What advantages, if any, would she have with her choice of lenses?
image. Big, thick lenses are more powerful. So to see far away, she
(a) She will not have any advantage as even thicker lenses would give
needed a big powerful lens. Unfortunately, she realized that a big lens is
clearer images.
very heavy
(b) Thicker lenses would have made the telescope easier to handle.
(P-2 of 101
[P-3 of 10]
from which
yf a spherical
the apertura
Eyoplex
To eye
mirror i
re paral
mac
Inca
e concave mi
spherical mir
middle poin
Do all transparent bodies disperse light? Support your answer wil​

Answer 1

Answer:

WildHorn® RFID Protected Genuine High Quality

Explanation:

विद्यार्थियों को किस बात में सावधानी रखनी चाहिए ? *

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अपने भावी जीवन के निर्माण में

अपने सेहत के लिए

अपने बारे में'अधिकरण कारक ' का चिहन कौनसा है ? *

1 point

से , के साथ

में , पर

के लिए' अरे ! रुक जाओ। ' कौनसा कारक है ? *

1 point

संप्रदान कारक

संबंध कारक

संबोधन कारककिसके बच्चे ऊन के गोले जैसे दिख रहे थे ? *

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