Question
In a concave mirror which of the following pair of
position of object – size of the image is correct? I. At infinity – point sized II. Beyond C – diminishedSolution
In the case of the placement of concave mirror, convex mirror, concave lens and convex lens, the image of an object placed at infinity will be highly diminished and point sized. If the object is beyond C in front of a concave mirror, the Image is invented and real, but diminished.
Anil, Anshika and Anamika can do a certain piece of work in 64 days, 72 days and 96 days, respectively. All of them started working together but after _...
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120 unit of work can be completed by P alone in 20 days. P started working alone and joined by Q after 10 days such that they completed the remaining wo...
P and Q can separately finish the work in 15 days and 25 days respectively. They worked together and P left the work, so Q complete the remaining work i...
‘A’ alone can do some work in 10 days. ‘B’ and ‘C’ together can do the same work in 4 days. If ‘B’ is half as efficient as ‘A’, then...
A and B together, B and C together and A and C together can complete a piece of work in 40 days, 30 days and 50 days respectively. Find the ratio...
