A concave mirror of focal length 'fproduces a real image n times the – InterviewSolution

InterviewSolution

1.	A concave mirror of focal length 'fproduces a real image n times the sizeof the object. The distance of the objectfrom the mirror is(a) (n-1) f(c) (n+ 1) f/n (d) (n-1) f/rn
Answer» <p>Option (a)</p><p>Explanation:Focal Length = fMagnification = 1/n</p><p>Now let object was placed at a distance. u = xNow, we know that m = \|v/u\| => v = x/n</p><p>Applying Mirror Formula1/u + 1/v = 1/fPlug the values of u,v and f</p><p>-1/x + n/x = 1/fn-1/x = 1/fx = ( n-1 )f</p>

Discussion

No Comment Found

Related InterviewSolutions

The bottom of a cooking utensil is paintedGive the reason.
tan 3xcos r+ cos 2x + cos 5
A body constrained to move along the z-axis of a coordinate system isconstant force F given byF=-\hat{i}+2 \hat{j}+3 \hat{\mathbf{k}} N
d. A stone thrown vertically upwards witinitial velocity u reaches a height 'h'before coming down. Show that thetime taken to go up is same as the timetaken to come down.
d. A stone thrown vertically upwards withinitial velocity u reaches a height 'h'before coming down. Show that thetime taken to go up is same as the timetaken to come down.
-. Givetelationbetu eenvelo city-+-frequency-andWavelength of light
3. Why the banana "tree" is a herb?
All seeds do not germinate. Why?
show that pollen grains,need sugar to germinate
Answer the following in one sentence1. What do seeds need to germinate?