If a body travels half the distance with velocity v1 and the next half with velocity v2, its average velocity will be given by
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(a) v=√(v1 x v2) (b) v= (v1 + […]
A ray of light is incident on a transparent glass slab of refractive index 1.62. The reflected and refracted rays are mutually perpendicular. The angle of incidence is
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(a) 58.3° (b) 50° […]
A particle under the action of a constant force moves from rest upto 20 seconds. If distance covered in first 10 seconds is S₁ and that covered in next seconds is S₂, then
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If the sodium light in Young’s double slit experiment is replaced by red light, the fringe width will
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(a) decrease (b) increase (c) remain unaffected (d) first increase then decrease
Correct Answer: […]
The angular momentum of an electron is J. The magnitude of the magnetic moment will be
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(a) eJ / m (b) (eJ) / (2m) (c) 2meJ (d) (2m) / (eJ)
Correct Answer: […]
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