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Given below are four logic gate symbol (figure). Those for OR, NOR and NAND are respectively
|
(a) 1, 4, 3 |
(b) 4, 1, 2 |
(c) 1, 3, 4 |
(d) 4, 2, 1 |
In this reaction how many α and β particles are emitted
|
(a) 6α,3β |
(b) 3 α, 4β |
(c) 4 α, 3β |
(d) 3α, 6β |
The focal lengths for violet, green and red light rays are 
and 
respectively. Which of the following is the true relationship
|
(a) |
(b) |
(c) |
(d) |
Two coherent sources separated by distance d are radiating in phase having wavelength l. A detector moves in a big circle around the two sources in the plane of the two sources. The angular position of n = 4 interference maxima is given as
|
(a) |
(b) |
(c) |
(d) |
A coil resistance 20W and inductance 5H is connected with a 100V battery. Energy stored in the coil will be
|
(a) 41.5 J |
(b) 62.50 J |
(c) 125 J |
(d) 250 J |
A radioactive nucleus emits a beta particle. The parent and daughter nuclei are
|
(a) Isotopes |
(b) Isotones |
(c) Isomers |
(d) Isobars |
A 50 ohm galvanometer gets full scale deflection when a current of 0.01 A passes through the coil. When it is converted to a 10 A ammeter, the shunt resistance is
|
(a) 0.01 W |
(b) 0.05 W |
(c) 2000 W |
(d) 5000 W |
In the following atoms and moleculates for the transition from n = 2 to n = 1, the spectral line of minimum wavelength will be produced by
|
(a) Hydrogen atom |
(b) Deuterium atom |
(c) Uni-ionized helium |
(d) di-ionized lithium |
A point charge +q is placed at the centre of a cube of side L. The electric flux emerging from the cube is
|
(a) |
(b) Zero |
(c) |
(d) |
