- AThe present state of the configuration.
- BThe way the state is achieved.
- CBoth a and b.
- DNone.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
The angle of polarisation for any medium is 60o, what will be critical angle for this
|
(a) |
(b) |
(c) |
(d) |
A uniform wire of 16 Ω is made into the form of a square. Two opposite corners of the square are connected by a wire of resistance 16 Ω. The effective resistance between the other two opposite corners is
|
(a) 32 Ω |
(b) 20 Ω |
(c) 8 Ω |
(d) 4 Ω |
When yellow light is incident on a surface, no electrons are emitted while green light can emit. If red light is incident on the surface, then
|
(a) No electrons are emitted |
|
(b) Photons are emitted |
|
(c) Electrons of higher energy are emitted |
|
(d) Electrons of lower energy are emitted |
A convex lens of focal length 40 cm is in contact with a concave lens of focal length 25 cm. The power of combination is
|
(a) – 1.5 D |
(b) – 6.5 D |
(c) + 6.5 D |
(d) + 6.67 D |
A wire in the form of a circular loop of one turn carrying a current produces a magnetic field B at the centre. If the same wire is looped into a coil of two turns and carries the same current, the new value of magnetic induction at the centre is
|
(a) 5B |
(b) 3B |
(c) 2B |
(d) 4B |