Three plates of common surface area A are connected as shown. The effective capacitance will be

|
(a) |
(b) |
(c) |
(d) |
Three plates of common surface area A are connected as shown. The effective capacitance will be

|
(a) |
(b) |
(c) |
(d) |
(d) ![]()
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A man cannot see clearly the objects beyond a distance of 20 cm from his eyes. To see distant objects clearly he must use which kind of lenses and of what focal length
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(a) 100 cm convex |
(b) 100 cm concave |
(c) 20 cm convex |
(d) 20 cm concave |
Susceptibility of ferromagnetic substance is
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(a) > 1 |
(b) < 1 |
(c) 0 |
(d) 1 |
A particle of charge q and mass m moves in a circular orbit of radius r with angular speed ω. The ratio of the magnitude of its magnetic moment to that of its angular momentum depends on
|
(a) ω and q |
(b) ω q and m |
(c) q and m |
(d) ω and m |
Zener breakdown takes place if
|
(a) Doped impurity is low |
(b) Doped impurity is high |
|
(c) Less impurity in N-part |
(d) Less impurity in P-type |
For the circuit shown, which of the following statements is true
|
(a) With |
|
(b) With |
|
(c) With |
|
(d) With |