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Physics Test 25...

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  • Question 1
    4 / -1

    In an experiment, the percentage of error occurred in the measurement of physical quantities A, B, C and D are 1%, 2%, 3% and 4%, respectively. Then the maximum percentage of error in the measurement X, where 

  • Question 2
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    According to the assumptions made in the kinetic theory of gases, when two molecules of a gas collide with each other then

  • Question 3
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    For the given logic circuit; pick the correct option

  • Question 4
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    The energy of a photon is equal to the kinetic energy of a proton. If λ1 is the de Broglie wavelength of a proton, λ2 the wavelength associated with the photon and if the energy of the photon is E, then (λ1/λ2) is proportional to

  • Question 5
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    In an electromagnetic wave in free space the root mean square value of the electric field is Erms = 6 V/m.

    The peak value of the magnetic field is:-

  • Question 6
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    The position of the direct image obtained at O, when a monochromatic beam of light is passed through a plane transmission grating at normal incidence is shown in figure. The diffracted images A, B and C correspond to the first, second and third order diffraction. When the source is replaced by another source of shorter wavelength

  • Question 7
    4 / -1

    Two block of masses m1 and m2 are connected with a massless unstretched spring and placed over a plank moving with an acceleration 'a' as shown in figure. The coefficient of friction between the blocks and platform is μ.

  • Question 8
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    A 2.0 cm object is placed 15 cm in front of a concave mirror of focal length 10 cm. What is the size and nature of the image?

  • Question 9
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    A particle of mass 1 mg and charge q is lying at the mid-point of two stationary particles kept at a distance 2 m when each is carrying same charge q. If the free charged particle is displaced from its equilibrium position through distance x (x << 1 m). The particle executes SHM. Its angular frequency of oscillation will be _______ × 108 rad s−1 (if q2 = 10C2)

  • Question 10
    4 / -1

    Figure shows a rectangular copper plate with is centre of mass at the origin O and side AB = 2BC = 2 m. If a quarter part of the plate (shown as shaded) is removed, the centre of mass of the remaining plate would lie at

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