Related InterviewSolutions

• Two Cu wires of radii `R_(1)` and `R_(2)` are such that `(R_(1) gt R_(2))` . Then which of the following is true ?A. Transverse wave travels faster in thicker wireB. Transverse wave travels faster in thinner wireC. Travels with the same speed in both the wiresD. Does not travel
• The sphere of radii 8 cm and 2 cm are cooling. Their temperatures are `127^(@)C` and `527^(@)C` respectively . Find the ratio of energy radiated by them in the same timeA. `0.06`B. `0.5`C. 1D. 2
• The electric intensity of outside a charged sphere of radius R at a distance `r (r gt R)` isA. `(sigma R^(2))/(epsi_(0) r^(2))`B. `(sigma r^(2))/(epsi_(0)R^(2))`C. `(sigma r)/(epsi_(0)R)`D. `(sigmaR)/(epsi_(0)r)`
• Capacity of a capacitor is `48mu F`. When it is charged from `0.1` C to `0.5` C , change in the energy stored isA. 2500 JB. `2.5 xx 10^(-3) J`C. `2.5 xx 10^(6) J`D. `2.42 xx 10^(-2) J`
• Light travels through a glass plate of thickness t and refractive index `mu.` If c is the speed of light in vacuum, the time taken by light to travel this thickness of glass isA. `t mu c`B. `(tc)/(mu)`C. `(t)/(muc)`D. `(mu t)/(c)`
• `Ce^(4+)` is stable . This is because ofA. half-filled d-orbitalsB. all paired electrons in d-orbitalsC. empty orbitalD. fully filled d-orbital
• Find the differential equation of the family of circles whose centres lie on `X`-axis.A. `(d^(2)y)/(dx^(2)) + ((dy)/(dx))^(2) + 1 = 0`B. `y""(d^(2)y)/(dx^(2)) + ((dy)/(dx))^(2) - 1 = 0`C. `y""(d^(2)y)/(dx^(2)) - ((dy)/(dx))^(2) - 1 = 0`D. `y""(d^(2)y)/(dx^(2)) + ((dy)/(dx))^(2) + 1 = 0`
• The solution of the differential equation `y (1 + log x) (dx)/(dy) - x log x = 0` isA. y log x = y + cB. x log x = ycC. y (1 + log x) = cD. logx - y = c
• If `x^(2) y^(5) = (x + y)^(7) , " then " (d^(2)y)/(dx^(2))` is equal toA. `y //x ^(2)`B. `x//y`C. 1D. 0
• The value of `lim_(x to 0) (15^(x) - 5^(x) - 3^(x) + 1)/(1 - cos 2x) ` isA. `((log 3) (log 5))/(2)`B. 2 (log 3) (log 5)C. `(log 3 + log 5)/(2)`D. None of these