X-rays are in nature similar to
| (a) Beta rays | (b) Gamma rays | (c) de-Broglie waves | (d) Cathode rays |
X-rays are in nature similar to
| (a) Beta rays | (b) Gamma rays | (c) de-Broglie waves | (d) Cathode rays |
(b) Gamma rays
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
In the given circuit, with steady current, the potential drop across the capacitor must be

|
(a) V |
(b) V / 2 |
(c) V / 3 |
(d) 2V / 3 |
Three plates A, B, C each of area
have separation 3mm between A and B and 3mm between B and C The energy stored when the plates are fully charged is

|
(a) 1.6 |
(b) 2.1 |
(c) 5 |
(d) 7 |
A current loop placed in a magnetic field behaves like a
|
(a) Magnetic dipole |
(b) Magnetic substance |
(c) Magnetic pole |
(d) All are true |
A concave lens of glass, refractive index 1.5, has both surfaces of same radius of curvature R. On immersion in a medium of refractive index 1.75, it will behave as a
|
(a) Convergent lens of focal length 3.5 R |
|
(b) Convergent lens of focal length 3.0 R |
|
(c) Divergent lens of focal length 3.5 R |
|
(d) Divergent lens of focal length 3.0 R |
In the arrangement of resistances shown below, the effective resistance between points A and B is
|
(a) 20 Ω |
(b) 30 Ω |
(c) 90 Ω |
(d) 110 Ω |