Work, Power and EnergyHard
Question
The near point of a person is at 1m. The power of the lens needed so that he can read at a distance of 25 cm.
Options
A.1D
B.2D
C.3D
D.-3D
Solution
v = - 100 & u = - 25
P =
= - 1 + 4 = + 3D
P =
= - 1 + 4 = + 3DCreate a free account to view solution
View Solution FreeMore Work, Power and Energy Questions
A body of mass 10 kg is released from a Tower of height 20m and body acquires a velocity of 10 ms-1 after falling throug...A metal ball does not rebound when struck on a wall, whereas a rubber ball of same mass when thrown with the same veloci...A gas at pressure 6 × 105 N/m2 and volume 1m3 and its pressure falls to 4 × 105 N/m2. When its volume is 3m3. ...A block of mass 2 kg is free to move along the x-axis. It is at rest and from t = 0 onwards it is subjected to a time-de...Consider two process A and B on a system as shown in the figure let ᐃW1 and ᐃW2 be the work done by the syst...