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9. Arun bought a pair of skates at a sale where the discount given was 20%. If the amount he pays is Rs.1,600, find the marked price. 600 9. Arun bought a pair of skates at a sale where the discount given was 20%. If the amount he pays is Rs.1 find the marked price. [...]

In YDSE, the source is placed symmetrical to the slits. If a transparent slab is placed in front of the upper slit, then (slab can absorb a fraction of light) In YDSE the source is placed symmetrical to the slits. If a transparent slab is placed in front of the upper slit then (slab can [...]

8. The price of a TV is Rs.13,000. The sales tax charged on it is at the rate of 12%. Find the amount that Vinod will have to pay if he buys it. 000. The sales tax charged on it is at the rate of 12%. Find the amount that Vinod will have to pay [...]

Consider a film of thickness L as shown in four different cases below. Notice the observation of film with perpendicularly falling light. Mark the correct statement(s). Consider a film of thickness L as shown in four different cases below. Notice the observation of film with perpendicularly falling light. Mark the correct statement(s). October 11, 2020 [...]

Two points monochromatic and coherent sources of light of wavelength lemda each are placed as shown in figure. The initial phase difference between the sources is zero O. Two points monochromatic and coherent sources of light of wavelength lemda each are placed as shown in figure. The initial phase difference between the sources is zero [...]

37. A milkman sold two of his buffaloes for Rs.20,000 each. On one he made a gain of 5% and on the other a loss of 10%. Find his overall gain or loss. (Hint: Find CP of each) 000 each. On one he made a gain of 5% and on the other a loss of [...]

6. During a sale, a shop offered a discount of 10% on the marked prices of all the items. What would a customer have to pay for a pair of jeans marked at Rs.1450 and two shirts marked at Rs.850 each? 6. During a sale a shop offered a discount of 10% on the marked [...]

5. A VCR and TV were bought for Rs.8,000 each. The shopkeeper made a loss of 4% on the VCR and a profit of 8% on the TV. Find the gain or loss percent on the whole transaction. 000 each. The shopkeeper made a loss of 4% on the VCR and a profit of 8% [...]

3. A shopkeeper buys 80 articles for Rs.2,400 and sells them for a profit of 16%. Find the selling price of one article. 3. A shopkeeper buys 80 articles for Rs.2 400 and sells them for a profit of 16%. Find the selling price of one article. October 11, 2020 Category: Chapter 7 - Cubes [...]

A parallel beam of light ( lemda = 500 nm) is incident at an angle alpha = 30 with the normal to the slit plane in Young’s double slit experiment. Assume that the intensity due to each A parallel beam of light ( lemda = 500 nm) is incident at an angle alpha = 30 [...]