MCQ
Three specimens A, B, C of same radioactive element has activities 1 microcurie, 1 rutherford and 1 becquerel respectively. Which specimen has maximum mass?
- AA
- BB
- CC
- DAll have equal masses.
✓
Answer
- B
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
Of the following about capacitive reactance which is correct?
When a wave travels from one medium to another, the quantity which will not change is its:
Which of the following did Bohr use to explain his theory?
Pick out the longest wavelength from the following types of radiations
|
(a) Blue light |
(b) g-rays |
(c) X-rays |
(d) Red light |
X-rays are produced by accelerating electrons by voltage V and let they strike a metal of atomic number Z. The highest frequency of X-rays produced is proportional to
|
(a) V |
(b) Z |
(c) (Z – 1) |
(d) |
Shown below is a distribution of charges. The flux of electric field due to these charges through the surface S is
|
(a) 3q/ |
(b) 2q/ |
(c) q/ |
(d) Zero |
In Huygens' theory, the plane of particles vibrating in the same state is called:
The capacity of a parallel plate condenser is 10μF without dielectric. Dielectric of constant 2 is used to fill half the distance between the plates, the new capacitance in μF is
|
(a) 10 |
(b) 20 |
(c) 15 |
(d) 13.33 |
Intrinsic semiconductor is electrically neutral. Extrinsic semiconductor having large number of current carriers would be
|
(a) Positively charged |
|
(b) Negatively charged |
|
(c) Positively charged or negatively charged depending upon the type of impurity that has been added |
|
(d) Electrically neutral |
In the diagram, a prism of angle $30^{\circ}$ is used. A ray PQ is incident as shown. An emergent ray RS emerges perpendicular to the second face. The angle of deviation is:
→