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If the source moves toward the observer, then the frequency?
- Decreases
- Increases
- Remains constant
- Fluctuates
What is the minimum number of diodes required for full-wave rectification?
- 1
- 2
- 3
- 4
For interference of light to occur, the light must be?
- Monochromatic
- Polychromatic
- Coherent
- Incoherent
In Young's double-slit experiment, the center is always?
- Bright
- Dark
- Diffuse
- Variable
In the diffraction pattern of a single slit, the center is usually?
- Bright
- Dark
- Diffuse
- Variable
If an electron transitions from n=6 to n=7, the percentage increase in radius is approximately?
- 11%
- 22%
- 33%
- 44%
If the initial velocity is 40 m/s, time is 5 seconds, and acceleration is 10 m/s2, then the distance traveled is?
- 200 m
- 275 m
- 325 m
- 400 m
If the angle between the vector area and the electric field is 30∘, then the flux will be maximum when?
- √3/2
- 1/2
- 1/√2
- √2/2
A proton is moving in an electric field described by the potential V= x+6. What is the force experienced by the proton?
- F = dV/dx
- F = q. dv/dx
- F = −q. dv/dx
- F = −q. dv/dx + qE
The expression (1-v^2/c^2)^-0.25?
- Less than one
- Equal to one
- Greater than one
- Cannot be determined from the given information
