Question
Statements : All cards are colours. Some charts
are cards. Some papers are charts. Conclusions: Atleast some papers are cards. All colours being paper is a possibility. All charts being colours is a possibility. In each of the questions below are given three statements followed by three conclusions numbered I, II and III. You have to take the given statements to be true even if they seem to be at variance with commonly known facts. Read all the conclusions and then decide which of given conclusions logically follows from the given statements disregarding commonly known facts.Solution
Some papers are charts(I) + Some charts are cards(I) ⇒ No conclusion. Hence conclusion I does not follow. Some charts are cards(I) + All cards are colours(A) ⇒ Some charts are colours(I) ⇒ conversion ⇒ Some colours are charts(I) + Some charts are papers (I) ⇒ Probable conclusion ⇒ Some colours are papers(I) ⇒ Probable conclusion ⇒ All colours being paper is a possibility(I). Hence conclusion II follows. Some charts are cards(I) + All cards are colours(A) ⇒ Some charts are colours(I) ⇒ Probable conclusion ⇒ All charts being colours is a possibility. (I). Hence conclusion III follows. Venn Diagram Method : 
A pulse of light duration 10-5 s is absorbed fully by a little object initially at rest. If the power of this pulse is 45 × 10-3...
The wave nature of matter was proposed by:
What was invented by 'Zacharias Janssen'?
A cylindrical conductor of length L and radius R has its radius increasing linearly from R at one end to 2R at the other. A constant current I flows thr...
A sample contains equal numbers of two isotopes X and Y, each with half-lives of 10 days and 20 days respectively. What is the ratio of activities Aâ‚“ ...
An electron in a hydrogen atom de-excites from the 4th to the 2nd level. The wavelength of emitted photon falls in which series?
A capacitor filled with dielectric constant K is connected to a battery. If dielectric is removed, how much charge flows back?
A block of mass m rests on a smooth wedge of mass M, which in turn rests on a smooth horizontal surface. The wedge is accelerated horizontally with acc...
A sound wave of frequency 500 Hz travels at 340 m/s. Find its wavelength.
Which law states that the induced electromotive force (e.m.f.) is proportional to the rate of change of magnetic flux linkage?
Relevant for Exams:
