An object approaches a convergent lens from the left of the lens with a uniform speed `5 m//s` and stops at the focus. The image.A. moves away from the lens with uniform speed `5 m//s`B. moves away from the lens with uniform accelerationC. moves away from the lens with a non-uniform accelerationD. moves towards from the lens with a non-uniform acceleration

An object approaches a convergent lens from the left of the lens with

1.	An object approaches a convergent lens from the left of the lens with a uniform speed `5 m//s` and stops at the focus. The image.A. moves away from the lens with uniform speed `5 m//s`B. moves away from the lens with uniform accelerationC. moves away from the lens with a non-uniform accelerationD. moves towards from the lens with a non-uniform acceleration
Answer» Correct Answer - C When an object approaches a convergent lens from the left of the lens with a uniform speed of `5 m//s`, the image moves away from the lens with a non uniform acceleration. For example. If `f = 20 m` and `v = - 50 m , - 45 m` and `-35 m` , we get `v = 33.3m , 36 m , 40 m` and `46.7m`. Clearly, image moves away from the lens with a non uniform accelaration. Choice ( c) is correct.

Discussion

No Comment Found

Related InterviewSolutions

Red light of wavelength `6500 Å` from a distant source falls on a slit `0.50 mm` wide. Calculate the distance between first two dark bands on each side of central bright band in the diffraction pattern observed on a screen placed `1.8 m` from the slit.
The ratio of the intensity at the centre of a bright fringe to the intensity at a point one-quarter of the distance between two fringe from the centre is
The ratio of the intensity at the centre of a bright fringe to the intensity at a point one-quarter of the distance between two fringe from the centre isA. `2`B. `1//2`C. `4`D. `16`
Among the two interfering monochromatic sources A and B, A is ahead of B in phase by `66^@`. If the observation be taken from point P, such that `PB-PA=lambda//4`. Then the phase difference between the waves from A and B reaching P isA. `156^(@)`B. `140^(@)`C. `136^(@)`D. `126^(@)`
The radius of curvature of curved surface of a thin plano-convex lens is `10 cm` and the refractive index is `1.5`. If the plano surface is silvered, then the focal length will be.A. 15 cmB. 20 cmC. 5 cmD. 10 cm
Calculate the resolving power of a microscope with cone angle of light falling on the objective equal to `60^(@)`. Take `lambda = 600 nm mu` for air `= 1`.
The diameter of the pupil of human eye is about `2 mm`. Human eye is most sensitive to the wavelength `555 nm`. Find the limit of resolution of human eye.
Assume that light of wavelength `6000 Å` is coming from a star. What is the limit of resolution of a telescope whose objective has a diameter of 100 inch ? (NCERT Solved example)
A central fringe of interference pattern produced by light of wavelength `6000 Å` is shifted to the position of 5th bright fringe by introducing thin film of `mu = 1.5`. Calculate thickness of the film.
Laser light of wavelength `630 nm` incident on a pair of slits produces an interference pattern where bright fringes are separated by `8.1 mm`. Another light produces the interference pattern, where the bright fringes are separated by `7.2 mm`. Calculate the wavelength of second light.

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment