- ✓12th part of the mass of carbon atom
- B12th part of the mass of oxygen atom
- COne 16th of the mass of the hydrogen atom
- DOne 16th of the mass of a helium atom
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The electrical circuits used to get smooth d.c. output from a rectifier circuit is called
|
(a) Filter |
(b) Amplifier |
(c) Full wave rectifier |
(d) Oscillator |
Which of the following is not the property of a cathode ray
|
(a) It casts shadow |
(b) It produces heating effect |
|
(c) It produces flurosence |
(d) It does not deflect in electric field |
A group of bright and faint stars is called
|
(a) Galaxy |
(b) Comet |
(c) Black hole |
(d) Constellation |
Resistances of 6 ohm each are connected in the manner shown in adjoining figure. With the current 0.5 ampere as shown in figure, the potential difference
is

|
(a) 3.6 V |
(b) 6.0 V |
(c) 3.0 V |
(d) 7.2 V |
Two lenses of power +12 and – 2 diopters are placed in contact. What will the focal length of combination
|
(a) 10 cm |
(b) 12.5 cm |
(c) 16.6 cm |
(d) 8.33 cm |