The minimum energy required to remove an electron is called
|
(a) Stopping potential |
(b) Kinetic energy |
(c) Work function |
(d) None of these |
(c) Work function
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Two capacitors of capacities 
and 
are charged to voltages 
and 
respectively. There will be no exchange of energy in connecting them in parallel, if
|
(a) |
(b) |
(c) |
(d) |
If a wire of length 1 meter placed in uniform magnetic field 1.5 Tesla at angle 30° with magnetic field. The current in a wire 10 amp. Then force on a wire will be
|
(a) 7.5 N |
(b) 1.5 N |
(c) 0.5 N |
(d) 2.5 N |
The V-i graph for a conductor makes an angle θ with V-axis. Here V denotes the voltage and i denotes current. The resistance of conductor is given by
|
(a) sin θ |
(b) cos θ |
(c) tan θ |
(d) cot θ |
When one of the slits of Young’s experiment is covered with a transparent sheet of thickness 4.8 mm, the central fringe shifts to a position originally occupied by the 30th bright fringe. What should be the thickness of the sheet if the central fringe has to shift to the position occupied by 20th bright fringe
|
(a) 3.8 mm |
(b) 1.6 mm |
(c) 7.6 mm |
(d) 3.2 mm |
