Assertion (A): In a CRT, grid is kept at negative potential with respect to cathode.Reason (R): The function of grid in an electronic tube is to control the number of electrons.p> ?->(Show Answer!)

1. Assertion (A): In a CRT, grid is kept at negative potential with respect to cathode.Reason (R): The function of grid in an electronic tube is to control the number of electrons.

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MCQ->Assertion (A): In a CRT, grid is kept at negative potential with respect to cathode.Reason (R): The function of grid in an electronic tube is to control the number of electrons.

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MCQ-> Study the given information carefully to answer the given questions. Seven boxes— J, K, L; M, N, 0 and P are kept one above the other, but not necessarily in the same order. Each box contains different elements — Cookies, Pencils, Spoons, Diaries, Colours, Jewellery and Watches, but not necessarily in the same order. Only two boxes are kept between M and N. The Pencil box is kept immediately below M. Only two boxes are kept between the Pencil box and the Watch box. N is kept above the Watch box. The Diary box is kept immediately below the Watch box. Only three boxes are kept between the Diary box and J. The Jewellery box is kept immediately above J. 0 is kept immediately above K. 0 is not a Pencil box. P is kept immediately above the Cookie box. Only one box is kept between P and the Spoon box.Which of the following boxes is kept immediately above M ?
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MCQ-> Study the given information carefully to answer the given questions. Seven boxes— R, S, T, U, V, W and X, are kept one above the other, but not necessarily in the same order. Each box contains different elements Chocolates, Accessories, Ribbons, Balloons, Keys, Pins and Nuts, but not necessarily in the same order. Only three boxes are kept between U and V. The ribbon box is kept immediately above U. Only one box is kept between the ribbon box and the nuts box. The nuts box is kept below the ribbon box. Only two boxes are kept between the nuts box and R. S is kept immediately below X. S is not kept immediately above V. Only two boxes are kept between X and the Balloon box. V does not contain balloons. The chocolate box is kept immediately above W. Only three boxes are kept between the chocolates box and the accessories box. W does not contain Keys.How many boxes are kept between T and the nuts box?
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MCQ-> Study the given information carefully to answer the given questions. Seven boxes A, B, C, D, E, F and G are kept one above the other, but not necessarily in the same order. Each box contains different items Shoes, Papers, Bands, Medicines, Ribbons, Creams and Phones, but not necessarily in the same order. Only three boxes are kept between D and G. The Ribbon box is kept immediately above G. Only one box is kept between the Ribbon box and A. The Ribbon box is not the second from the bottom of the stack, Only one box is kept between E and A. E is kept above A. The Medicine box is kept immediately above E. Only three boxes are kept between the Medicine box and the Shoe box. The Paper Box is immediately above the Phone box. G is not the Paper box. F is kept immediately below the Cream box. Only one box is kept between B and the Cream box.Four of the following five are alike in a certain way and hence form a group. Which of the following does not belong to the group ?
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MCQ-> Analyse the following passage and provide appropriate answers for the follow. Popper claimed, scientific beliefs are universal in character, and have to be so if they are to serve us in explanation and prediction. For the universality of a scientific belief implies that, no matter how many instances we have found positive, there will always be an indefinite number of unexamined instances which may or may not also be positive. We have no good reason for supposing that any of these unexamined instances will be positive, or will be negative, so we must refrain from drawing any conclusions. On the other hand, a single negative instance is sufficient to prove that the belief is false, for such an instance is logically incompatible with the universal truth of the belief. Provided, therefore, that the instance is accepted as negative we must conclude that the scientific belief is false. In short, we can sometimes deduce that a universal scientific belief is false but we can never induce that a universal scientific belief is true. It is sometimes argued that this 'asymmetry' between verification and falsification is not nearly as pronounced as Popper declared it to be. Thus, there is no inconsistency in holding that a universal scientific belief is false despite any number of positive instances; and there is no inconsistency either in holding that a universal scientific belief is true despite the evidence of a negative instance. For the belief that an instance is negative is itself a scientific belief and may be falsified by experimental evidence which we accept and which is inconsistent with it. When, for example, we draw a right-angled triangle on the surface of a sphere using parts of three great circles for its sides, and discover that for this triangle Pythagoras' Theorem does not hold, we may decide that this apparently negative instance is not really negative because it is not a genuine instance at all. Triangles drawn on the surfaces of spheres are not the sort of triangles which fall within the scope of Pythagoras' Theorem. Falsification, that is to say, is no more capable of yielding conclusive rejections of scientific belief than verification is of yielding conclusive acceptances of scientific beliefs. The asymmetry between falsification and verification, therefore, has less logical significance than Popper supposed. We should, though, resist this reasoning. Falsifications may not be conclusive, for the acceptances on which rejections are based are always provisional acceptances. But, nevertheless, it remains the case that, in falsification, if we accept falsifying claims then, to remain consistent, we must reject falsified claims. On the other hand, although verifications are also not conclusive, our acceptance or rejection of verifying instances has no implications concerning the acceptance or rejection of verified claims. Falsifying claims sometimes give us a good reason for rejecting a scientific belief, namely when the claims are accepted. But verifying claims, even when accepted, give us no good and appropriate reason for accepting any scientific belief, because any such reason would have to be inductive to be appropriate and there are no good inductive reasons.According to Popper, the statement "Scientific beliefs are universal in character" implies that....