Boolean algebra is essentially based on
|
(a) Truth |
(b) Logic |
(c) Symbol |
(d) Numbers |
Boolean algebra is essentially based on
|
(a) Truth |
(b) Logic |
(c) Symbol |
(d) Numbers |
(b) Logic
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The image distance of an object placed 10 cm in front of a thin lens of focal length + 5 cm is
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(a) 6.5 cm |
(b) 8.0 cm |
(c) 9.5 cm |
(d) 10.0 cm |
In ballistic galvanometer, the frame on which the coil is wound is non-metallic to
|
(a) Avoid the production of induced e.m.f. |
(b) Avoid the production of eddy currents |
|
(c) Increase the production of eddy currents |
(d) Increase the production of induced e.m.f. |
Two metallic charged spheres whose radii are 20 cm and 10 cm respectively, have each 150 micro - coulomb positive charge. The common potential after they are connected by a conducting wire is
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(a) 9 × |
(b) 4.5 × |
(c) 1.8 × |
(d) 13.5 × |
Monochromatic light is refracted from air into the glass of refractive index μ. The ratio of the wavelength of incident and refracted waves is
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(a) 1 : μ |
(b) 1 : |
(c) μ : 1 |
(d) 1 : 1 |
Assertion : The capacity of a given conductor remains same even if charge is varied on it.
Reason : Capacitance depends upon nearly medium as well as size and shape of conductor.
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(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
|
(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
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(c) If assertion is true but reason is false. |
|
(d) If the assertion and reason both are false. |
A coil having an inductance of 0.5 H carries a current which is uniformly varying from zero to 10 ampere in 2 second. The e.m.f. (in volts) generated in the coil is
|
(a) 10 |
(b) 5 |
(c) 2.5 |
(d) 1.25 |
If 20 gm of a radioactive substance due to radioactive decay reduces to 10 gm in 4 minutes, then in what time 80 gm of the same substance will reduce to 10 gm
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(a) In 8 minutes |
(b) In 12 minutes |
(c) In 16 minutes |
(d) In 20 minutes |