Where should an object be placed in front of a convex lens to get a real to get real image of the size of the object ?A. at the focus of the lensB. at twice the focal lengthC. at infinityD. between the optical center of lens and its focus.

Where should an object be placed in front of a convex lens to get a re

1.	Where should an object be placed in front of a convex lens to get a real to get real image of the size of the object ?A. at the focus of the lensB. at twice the focal lengthC. at infinityD. between the optical center of lens and its focus.
Answer» Correct Answer - b At twice the focal length.

Discussion

No Comment Found

Related InterviewSolutions

A ray of light passes through two slabs of same thickness. In the first slab `n_(1)` waves are formed and in the second slab `n_2`. Find refractive ` ` index of second medium with respect to first.
Find the position and nature of the image of an object 5 cm high and 10 cm in front of a convex lens of focal length 6 cm.
An object is placed between f and 2f of a convex lens. Which of the following statements correctly describes its image?A. real, larger than the objectB. erect, smaller than the objectC. inveted, same size as objectD. virtual, larger than the object
A 1 cm high object is placed at a distance of 2f from a convex lens. What is the height of the image formed?
Find the Odd one out:Critical angle, angle of incidence, angle of refraction, alternate angle
Assertion: White light is incident on face AB of an isosceles right angled prism as shown. Colours, for which refractive index of material of prism is more than 1.414, will be able to emerge from the face AC. Reason:Total internal reflection cannot take place for the light travelling from a rarer medium to a denser medium.A. If both Assertion and Reason are true and the Reason is correct explanation of the Assertion.B. If both Assertion and Reason are true but Reason is not the correct explanation of the Assertion.C. If both Assertion is true, but the Reason is false.D. If both Assertion is false but the Reason is true.
If the speed of light in ice is `2.3xx10^8 m//s,` what is its index of refraction? What is the critical angle of incidence for light going from ice to air?
A light ray going through a prism with the angle of prism `60^@,` is founded to deviate at least by `30^@.` what Is the range of the refractive index of the prism?
The speed of light in wateris `2.25 xx 10^(8)`m/s. If the speed of light in vaccum be `3 xx 10^(8)`m/s, calculatethe refractive index of water
Assertion:Minimum deviation by an equilateral prism of refractive index sqrt2 is `30^@.` Reason: It is from the relation, `mu=sin((A+delta_m)/2)/sin(A/2)`A. If both Assertion and Reason are true and the Reason is correct explanation of the Assertion.B. If both Assertion and Reason are true but Reason is not the correct explanation of the Assertion.C. If both Assertion is true, but the Reason is false.D. If both Assertion is false but the Reason is true.

Where should an object be placed in front of a convex lens to get a real to get real image of the size of the object ?A. at the focus of the lensB. at twice the focal lengthC. at infinityD. between the optical center of lens and its focus.

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment