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Physics - Light

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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)

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2. Which one of the following phenomena cannot be attributed to the refraction of light?

  • Option : D
  • Explanation : (D) Red shift is a phenomenon not attributed to the refraction of light.
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3. The relation among u, v and f for a spherical mirror is (NTSE Mizoram, Stage-I, 2012-13)

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4. If the rays constituting the beam actually meet at a point or appear to meet at a point, then the beam is (NTSE Mizoram, Stage-I, 2012-13)

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5. What is the power of a concave lens whose focal length is -75.0 cm? (NTSE Mizoram, Stage-I, 2012-13)

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