- The value of a scalar.
- Component of a vector.
- A vector.
- The magnitude of a vector.
The value of a scalar.
A vector.
The magnitude of a vector.
Explanation:
The value of a scalar, a vector and the magnitude of a vector do not depend on a given set of coordinate axes with different orientation. However, components of a vector depend on the orientation of the axes.
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At a distance of 10 cm from a long straight wire carrying current, the magnetic field is 0.04 T. At the distance of 40 cm, the magnetic field will be
|
(a) 0.01 T |
(b) 0.02 T |
(c) 0.08 T |
(d) 0.16 T |
In an RC circuit while charging, the graph of in i versus time is as shown by the dotted line in the diagram figure, where i is the current. When the value of the resistance is doubled, which of the solid curve best represents the variation of in i versus time

|
(a) P |
(b) Q |
(c) R |
(d) S |
The continuous X-rays spectrum produced by an X-ray machine at constant voltage has
| (a) A maximum wavelength | (b) A minimum wavelength |
|
(c) A single wavelength |
(d) A minimum frequency |
The stopping potential (
versus frequency (n) plot of a substance is shown in figure the threshold wave length is

|
(a) 5 |
(b) 6000Å |
|
(c) 5000 Å |
(d) Can not be estimated from given data |