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1. An electric lamp whose resistance is 10 ohm, and a conductor of 2 ohm resistance are connected in series with a 6 V battery. The total current through the circuit and the potential difference across the electric lamp are? (NTSE Panchkula, Chandigarh, Stage-I, 2012-13)
3.6A,6V
0.5A,5V
2.0 A, 0.2 V
0.3 A, 3 V
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2. Relation between mass of body and its weight is (NTSE, Madhya Pradesh, Stage-I, 2014-15)
w=mg.
w = m⁄g.
g = m - w.
w = m + g.
3. Unit of pressure in S.I. system is (NTSE, Chhattisgarh, Stage-I, 2014-15)
Kelvin.
Pascal.
Newton.
Calorie.
4. An apple falls from a tree because of gravitation between the earth and apple. If F1 is the magnitude of force exerted by the earth on the apple and F2 is the magnitude of force exerted by apple on the earth, then (NTSE, Chandigarh, Stage-I, 2014-15)
F1 is very much greater than F2.
F2 is very much greater than F1.
F1 is only a little greater than F2.
F1 and F2 are equal.
5. If the mass of the body on the surface of the earth is 50 kg, its mass at the centre of the earth is (NTSE, Tamil Nadu, Stage-I, 2014-15).
Zero.
More than 50 kg.
Less than 50 kg.
Equal to 50 kg.
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