Question
Girish can paint a picture in 4 days when he works for 8
hours per day. Due to illness, he could work for only 6 hours per day and was required to finish painting 7 such pictures. How many days would Girish take to finish the work?Solution
formula used M1 D1 / W1 = M2 D2 / W2 4 x 8 / 1 = 6 x D2 / 7 D2 = 7 x 4 x 8 /6 112 / 3 37 (1/3) days
What is the principle behind the working of a transformer?
Which of the following waves require a medium to travel?
A body of mass 3 kg has a velocity of 4 m/s. Find its kinetic energy.
Which instrument is primarily used to measure the relative density of liquids by utilizing the principle of buoyancy?
The balance point in a potentiometer for a cell of emf 1.5 V is 60 cm. If a resistance of 5 Ω is connected in parallel with the cell and the new balanc...
A particle of mass m is placed in a potential V(x) = ax² + bx⁴. For small oscillations around equilibrium, its time period is:
From the given options, the speed of sound is highest in which material?
Parsec is the unit of
A cylindrical conductor of length L and radius R has its radius increasing linearly from R at one end to 2R at the other. A constant current I flows thr...
A body is projected upwards with an initial velocity u . At the highest point, what is its acceleration?
Relevant for Exams:
