Question
Three boys can do a work in 15 days where as 6 girls can
do in 12days. What will be the time taken to complete the same work by a teacher if the efficiency of teacher is 20% more than that of a girls?Solution
3 x B × 15 = 6 x W x 12 B : G= 8:5 Efficiency of a teacher will be = (120 /100) × 5 = 6 Time taken by a teacher will be = (3 × 8 × 15)/6= 60 days
Inactive Nitrogen and Argon gases are usually used in electric bulbs in order to
Zero group was introduced by
Which part of the brain is responsible for balance and coordination?
Before X-ray examination (coloured X-ray) of the stomach, patients are given suitable salt of barium becauseÂ
Which of the following is/are correct?
1. Displacement current can exist in vacuum
2. Magnetic field can exist without electric f...
Lamberts law is related to –
The main thinking part of the brain is:
Study the given information.
Consider the force on a current carrying straight conductor in a magnetic field.
(i) It is perpendicular...
Marbles come under which category of rockes?
Which of the following part of the earth doesn’t allow the S wave to pass through itself?
Relevant for Exams:
