MCQ
Name the unit in which work function of a metal is generally expressed.
- ANewton
- BKilojoule
- CeV
- DV
✓
Answer
- eV
Explanation:
Work function in generally expressed in electron volt.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
A thin circular wire carrying a current I has a magnetic moment M. The shape of the wire is changed to a square and it carries the same current. It will have a magnetic moment
|
(a) M |
(b) |
(c) |
(d) |
In the given circuit, the voltmeter records 5 volts. The resistance of the voltmeter in ohms is
|
(a) 200 |
(b) 100 |
(c) 10 |
(d) 50 |
Curie temperature is the temperature above which:
In an A.C. circuit, the capacitive reactance is defined as __________ .
To obtain electrons as majority charge carriers in a semiconductor, the impurity mixed is
|
(a) Monovalent |
(b) Divalent |
(c) Trivalent |
(d) Pentavalent |
A particle executes simple harmonic motion under the restoring force provided by a spring. The time period is T. If the spring is divided in two equal parts and one part is used to continue the simple harmonic motion, the time period will:
→- Remain T
- Become 2T
- Become $\frac{\text{T}}{2}$
- Become $\frac{\text{T}}{\sqrt{2}}$
For a normal eye, the least distance of distinct vision is
|
(a) 0.25 m |
(b) 0.50 m |
(c) 25 m |
(d) Infinite |
What do you understand by the static or frictional electricity?
When a wire loop is rotated in a magnetic field, the direction of induced e.m.f. changes once in each
|
(a) |
(b) |
(c) 1 revolution |
(d) 2 revolution |
Three unequal resistors in parallel are equivalent to a resistance 1 ohm. If two of them are in the ratio 1 : 2 and if no resistance value is fractional, the largest of the three resistances in ohms is
|
(a) 4 |
(b) 6 |
(c) 8 |
(d) 12 |