A 6 cm tall object is placed perpendicular

Asked by admin @ 29/08/2021 in Physics viewed by 277 People

a 6 cm tall object is placed perpendicular to the principal axis of a convex lens of focal length 15cm .the distance of the object from the lens is 10cm. find the position,size and nature of the image formed, using the lens formula

Answered by admin @ 29/08/2021

height of object = 6cm

focal length of convex lens, f = +15cm

object distance from the lens, u = -10cm

from lens maker formula,

1/v - 1/u = 1/f

1/v - 1/-10 = 1/15

or, 1/v = 1/15 - 1/10

or, 1/v = 2/30 - 3/30 = -1/30

or, v = -30cm

hence, position of image is 30cm aways from the lens.

magnification, m = v/u

or, height of image/height of object = v/u

or, height of image/6cm = (-30cm)/(-10cm)

or, height of image = 18cm

hence, height of image is 18cm ( larger than object )

so, position of image => 30cm

size of image => 18cm

nature of image => real and enlarged

A 5 cm tall object is placed perpendicular

Asked by admin @ 31/08/2021 in Physics viewed by 298 persons

. A 5 cm tall object is placed perpendicular to the principal axis of a convex lens of focal- length 20 cm. The distance of the object from the len …

A 2 cm tall object is placed perpendicular

Asked by admin @ 31/08/2021 in Physics viewed by 276 persons

A 2 cm tall object is placed perpendicular to the principal axis of a convex lens of focal length 10 cm. The distance of the object from the lens is …

A 2.0 cm tall object is placed perpendicular

Asked by admin @ 29/08/2021 in Physics viewed by 295 persons

A 2 cm tall object is placed perpendicular to the principal axis of a convex lens of focal length 10 cm. The distance of the object from the lens is …

An object is placed 15 cm from a concave mirror

Asked by admin @ 03/08/2021 in Physics viewed by 341 persons

An object is placed 15 cm from a converging ( concave ) mirror that has a focal length of 10 cm a. determine the image located b. determine the magnification …

An object is placed 10 cm from a convex lens

Asked by maham237 @ 20/02/2021 in Physics viewed by 346 persons

An object is placed 10 cm from a convex lens of focal length 20 cm. what is the lateral magnification of the object?

Find the position of an object which when placed

Asked by admin @ 17/08/2021 in Science viewed by 320 persons

find the position of an object when placed in front of a concave mirror of focal length 20 cm produces a virtual image,which is twice size of object.

A screen is placed 50 cm from a single

Asked by admin @ 13/08/2021 in Physics viewed by 337 persons

a screen is placed 50 cm from a single slit which is illuminated with light of wavelength lambda . if distance between the first and third minima in diffraction pattern …

An object 2cm high is placed at a distance

Asked by admin @ 23/08/2021 in Physics viewed by 336 persons

an object 2cm high is placed at a distance of 16cm from a concave mirror which produces a real image 3cm high. what is focal length of the mirror and …

Radius of a circular loop placed in a perpendicular

Asked by admin @ 17/08/2021 in Physics viewed by 302 persons

Radius of a circular loop placed in a perpendicular uniform magnetic field is increasing at a constant rate of r metre per second if at any instant radius of the …

An object is placed perpendicular to the principal axis

Asked by admin @ 11/08/2021 in Physics viewed by 280 persons

An object is placed perpendicular to the principal axis of a convex lens of focal length 20cm. the distance of the object from the lens is 30cm. find the 1)position …

An object of height 7.5 cm

Asked by admin @ 10/08/2021 in Physics viewed by 301 persons

An object of height 7.5 cm is placed at a distance of 35 cm from the converging lens whose focal length is 15 cm. (i) what is the height of …

A conducting ring of radius r is placed perpendicularly

Asked by admin @ 23/08/2021 in Physics viewed by 302 persons

a conducting ring of radius r is placed perpendicularly inside a time varying magnetic field given by B=Bi+ alpha•t. Bi and alpha are positive constant.Emf induced in the ring is

Object placed between pole and focus of concave mirror

Asked by admin @ 20/08/2021 in Physics viewed by 272 persons

An object placed between the pole and focus of a concave mirror produces a virtual and enlarged image. Explain using mirror formula.

An object placed 20cm in front of a mirror

Asked by admin @ 17/08/2021 in Physics viewed by 304 persons

An object placed 20cm in front of a mirror is found to have an image 15cm (a) in front of it, (b) behind the mirror . Find the focal length …

A telescope with objective of focal length 60 cm

Asked by admin @ 20/08/2021 in Physics viewed by 272 persons

A telescope with objective of focal length 60 cm and eyepiece of focal length 5 centimetre is focused on a far distance object such that the parallel rays emerge from …