Question
The de-Broglie wavelength λ associated with an electron having kinetic energy E is given by the expression
|
(a) |
(b) |
(c) 2mhE |
(d) |
✓
Answer
(a) 
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 point charge is kept at the centre of a metallic insulated spherical shell. Then
|
(a) Electric field out side the sphere is zero |
(b) Electric field inside the sphere is zero |
|
(c) Net induced charge on the sphere is zero |
(d) Electric potential inside the sphere is zero |
A circular loop carrying a current is replaced by ann equivalent magnetic dipole. A point on the axis of the loop is in:
- End-on position.
- Broadside-on position.
- Both.
- None.
The refractive index of water is 1.33. The direction in which a man under water should look to see the setting sun is
|
(a) 49o to the horizontal |
(b) 90o with the vertical |
|
(c) 49o to the vertical |
(d) Along the horizontal |
When a wave travels from one medium to another, the quantity which will not change is its:
According to Maxwell , most of the optical properties of light depend on:
Barrier potential of a P-N junction diode does not depend on
|
(a) Temperature |
(b) Forward bias |
(c) Doping density |
(d) Diode design |
Which of the following is correct?
The Current in resistance R at resonance is.
Gases exert pressure on the walls of the container, because the gas molecules:
Current through wire XY of circuit shown is
|
(a) 1 A |
(b) 4 A |
(c) 2 A |
(d) 3 A |