This symbol represents
|
(a) NOT gate |
(b) OR gate |
(c) AND gate |
(d) NOR gate |
This symbol represents
|
(a) NOT gate |
(b) OR gate |
(c) AND gate |
(d) NOR gate |
(a) NOT gate
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ABC is a right angled triangle in which AB = 3 cm and BC = 4 cm. And Ð ABC = p/2. The three charges +15, +12 and -20 e.s.u. are placed respectively on A, B and C. The force acting on B is
|
(a) 125 dynes |
(b) 35 dynes |
(c) 25 dynes |
(d) Zero |
A condenser of capacity 50μF is charged to 10 volts. Its energy is equal to
|
(a) 2.5 |
(b) 2.5 |
(c) 5 |
(d) 1.2 |
A ray of light travelling in a transparent medium falls on a surface separating the medium from air at an angle of incidence of 45°. The ray undergoes total internal reflection. If n is the refractive index of the medium with respect to air, select the possible value (s) of n from the following
|
(a) 1.5 |
(b) 1.6 |
(c) 1.3 |
(d) a, b |
An electron is travelling along the x-direction. It encounters a magnetic field in the y-direction. Its subsequent motion will be
|
(a) Straight line along the x-direction |
(b) A circle in the xz-plane |
|
(c) A circle in the yz-plane |
(d) A circle in the xy-plane |
The mass defect in a particular nuclear reaction is 0.3 grams. The amount of energy liberated in kilowatt hours is (Velocity of light = 3
)
|
(a) 1.5 |
(b) 2.5 |
(c) 3 |
(d) 7.5 |

A photon of energy 8 eV is incident on a metal surface of threshold frequency 1.6
, then the maximum kinetic energy of photoelectrons emitted is (h = 6.6
|
(a) 4.8 eV |
(a) 4.8 eV |
(c) 1.4 eV |
(d) 0.8 eV |