Question
In an exam of 100 marks, the average marks of a class of
38 students are 72. If the top 3 scorers of the class leave, the average score falls “down by 1. If the other two toppers except "the highest topper scored not more than 77", then what is the maximum score the topper can score?Solution
Total score of 38 students = (38 × 72) = 2736 Total score of top 3 scorers = 2736 – (35 × 71) = 251 To minimize the score of the top scorer, we assume the other two top scorers score the maximum they can = 77 marks each. So, the top scorer scored = 251 – 154 = 97 marks.
How much energy is consumed by a 100 W bulb in 2 hours?
In a plane electromagnetic wave. the electric field oscillates sinusoid ally at a frequency of 3 Γ 108 Hz and amplitude 36 V/m. Find the am...
A sound wave has a frequency of 500 Hz and wavelength of 0.68 m. What is the speed of sound?
When white light passes through a glass prism, which color deviates the least?
What is the magnitude of magnetic force per unit length on a wire carrying a current of 10 A and making an angle of 30° with the direction of a unif...
A particle dropped from the top of a tower uniformly falls on ground at a distance which is equal to the height of tower. Which of the following paths ...
A particle moving in a straight line with uniform acceleration covers distances 5 m, 9 m, and 13 m in the 1st, 2nd, and 3rd second of motion respectivel...
A car increases its speed from 10 m/s to 30 m/s in 5 seconds. What is its acceleration?Β Β
The unit of measurement of noise is β
How does the angle of minimum deviation of a glass prism of refractive index 1.5 change, if it is immersed in a liquid of refractive index 1.25?