Exams

The washing machine works on the principle of ____________

If cosec2 θ = 625/576, then what is the value of [(sin θ – cos θ)/(sin θ + cos θ)]?

In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/phrase.

Ask for trouble

If x + (1/x) = (√3 + 1)/2, then what is the value of x4 + (1/x4)?

What is the value of [cos (90 + A)÷sec (270 – A)] + [sin (270 + A)÷cosec (630 – A)]?

In the following passage some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives.

Truth is indeed a controversial aspect of ______. But almost always it can be justified as a moral principle on the basis of ______. When we talk about speaking the truth in order not to hide what, if hidden, will only prove damaging to others, we are emphasizing the ability to ‘feel’ for others. Again, often we purposely keep ourselves from communicating the truth as, once ______, it may hurt someone‘s feelings and sentiments. But keeping a person in the dark or denying him or her knowledge which he or she ought to have amounts to ______ another soul of its right to know that with which it has a ______.

communicating the truth as, as a moral principle on the basis of ______.

Read the following passage carefully and choose the most appropriate answer to the question out of the four alternatives.

The human eye is a complex part of the body that is used for seeing. Eyes enable people to perform daily tasks and to learn about the world that surrounds them. Sight, or vision, is a rapidly occurring process that involves continuous interaction between the eye, the nervous system, and the brain. When someone looks at an object, what he really sees is the light reflected from the object. This reflected light passes through the lens and falls on the retina of the eye. Here the light induces nerve impulses that travel through the optic nerve to the brain and then over other nerves to muscles and glands.

The eye is similar to a television camera. Both the eye and the television camera convert light energy to electrical energy. The eye converts light to nerve impulses that are interpreted by the brain as the sense perception called sight. A television camera converts light to electronic signals that are broadcast and transformed into light images in a television receiver. It is wonderful that human eyes blink an average of once every six seconds. This washes the eye with the salty secretion from the tear or lachrymal glands. Each tear gland is about the size and shape of an almond. These glands are situated behind the upper eyelid at the outer corner of the eye. After passing over the eye, the liquid from the gland is drained into the nose through the tear duct at the inner corner of the eye.

What do we see when we look at an object?

Cost price of a refrigerator is Rs 13400. If loss percentage is 4%, then what is the selling price (in Rs) of the refrigerator?