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Selling price of article ‘A’ = x × 120% = Rs. 1.2x Selling price of article ‘B’ = (x + 480) × 90% = Rs. 0.90x + 432 According to the question, 0.90x + 432 – 1.2x = 90 432 – 90 = 0.3x 0.3x = 342 x = 1140 Selling price of article ‘B’ = 0.90 × 1140 + 432 = Rs. 1458 Marked price of the article ‘B’ = 1458/90 × 100 = Rs. 1620
Which of the following pair regarding sound is correct?
I. Loudness – depends on amplitude
II. Shrillness – depends on frequency
Why does a large fire in the open appear to be fanned by strong winds?
From the given options, the speed of sound is highest in which material?
Which of the following materials is most suitable for marking electromagnetic and core of transformer?
The polarization of electromagnetic waves demonstrates that they are:
Which of the following is used to initiate nuclear fission?
The resistance of a conductor ________ and a semiconductor _________ on heating.
The amount of light entering in eye is controlled by:
The wave nature of matter was proposed by:
What is the velocity of light in a diamond if the refractive index of diamond with respect to vacuum is 2.5?