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5. A student carries out the experiment of tracing the path of a ray of liflir through a rectangularglass slab, for two different values of angle of incidence: °i= 30° and °i = 45°. The set ofvalues of the angle of refraction (°r)and the angle of emergence (°e). she is likely to observain the two cases, are:a) (Zr = 30°. Ze = 20°) and [_r = 250 b) [Ar = 20°. 24 = 30° and [.21 = 45.* )Le = 45°e = 28°)0 [Zr = 30° Le = 20°) and I r = 45°d) [_r= 20, 2e = 30') and = 25°e-- 45° |
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Answer» Please answer fast!!!A School organised a CAMP for training STUDENTS for athletic MEET. The condition for selection was that the weight of a student should be 45-55 kg. For this purpose the weights of 30 students of Class-Vill were taken and recorded as follows (in kg)-42, 56, 64, 47, 54, 66, 57, 58, 44, 50, 49, 59, 62, 70, 40, 56, 56, 56, 43, 47, 60, 63, 49, 54, 58 45, 47, 49, 64, 54 (a) Prepare a frequency distribution and draw a HISTOGRAM for the above data.(b) In what weight range do most students lie?(c) How many students got selected for the training? (d) What percentage of students weigh more than 55kg? |
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