- AViolet
- BGreen
- CBlue
- DNone of the above
Explanation:
Tolerance level of
Green: 0.5%
Blue: 0.25%
Violet: 0.1%
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Ratio of the wavelengths of first line of Lyman series and first line of Balmer series is
|
(a) 1: 3 |
(b) 27 : 5 |
(c) 5 : 27 |
(d) 4 : 9 |
A bar magnet of length 10 cm and having the pole strength equal to 10–3 weber is kept in a magnetic field having magnetic induction (B) equal to
Tesla. It makes an angle of 30o with the direction of magnetic induction. The value of the torque acting on the magnet is
(![]()
|
(a) 2π |
(b) 2 π |
(c) 0.5 N |
(d) 0.5 |
A cylindrical conductor has uniform cross-section. Resistivity of its material increase linearly from left end to right end. If a constant current is flowing through it and at a section distance x from left end, magnitude of electric field intensity is E, which of the following graphs is correct
|
(a) |
(b) |
(c) |
(d) |
A man can see only between 75 cm and 200 cm. The power of lens to correct the near point will be
|
(a) + 8/3 D |
(b) + 3 D |
(c) – 3 D |
(d) – 8/3 D |