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NEET TEST SERIES 74 CHEMISTRY

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February 7, 2025
NEET TEST SERIES 73 PHYSICS

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February 7, 2025
NEET TEST SERIES 129 PHYSICS

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1. Which of the following phenomenon is not explained by Huygen’s construction of wavefront?

(a) reflection
(b) diffraction
(c) refraction
(d) origin of spectra
Deselect Answer

(a)

(b)

(c)

(d)
None

2. Which of the following is the path difference for destructive interference?

Deselect Answer

(a)

(b)

(c)

(d)
None

3. The slits in Young’s double slit experiment are illuminated by light of wavelength 6000 A°. If the path difference at the central bright fright fringe is zero, what is the path difference for light from the slits at the fourth bright fringes?

(a) 2.4×10⁻⁶m
(b) 1.2×10⁻⁶m

(c) 10⁻⁶m
(d) 0.5×10⁻⁶m
Deselect Answer

(a)

(b)

(c)

(d)
None

4. A narrow slit of width 2 mm is illuminated by monochromatic light of wavelength 500nm. The distance between the first minima on either side on a screen at a distance of 1 m is

(a) 5 mm
(b) 1 mm
(c) 0.5 mm
(d) 10 mm

Deselect Answer

(a)

(b)

(c)

(d)
None

5. The surface of a metal illuminated with the light of 400nm. The kinetic energy of the ejected photoelectrons was found to be 1.68eV. The work function of the metal is: (hc=1240eV.nm)

(a) 1.41eV
(b) 1.51eV
(c) 1.68eV
(d) 3.09eV

Deselect Answer

(a)

(b)

(c)

(d)
None

6. In Young’s double slit experiment, the fringe width with light of wavelength 6000 A° is 3 mm. The fringe width, when the wavelength of light is changed to 4000 A° is

(a) 3 mm
(b) 1 mm
(c) 2 mm
(d) 4 mm

Deselect Answer

(a)

(b)

(c)

(d)
None

7. When a charged conductor placed in an electrostatic field , the electric field within the plate

(a) is zero
(b) depends upon
(c) depends upon
(d) depends upon the number density of electrons

Deselect Answer

(a)

(b)

(c)

(d)
None

8. Find out flux through the given Gaussian surface

Deselect Answer

(a)

(b)

(c)

(d)
None

9. Electric field at a point varies as

(a) for a point charge
(b) for an electric dipole
(c) inside a uniformly charged sphere
(d) outside a uniformly charged sphere

Deselect Answer

(a)

(b)

(c)

(d)
None

10. A uniform field is parallel to axis of a hollow hemisphere of radius as shown in the figure. Electric flux through the hemisperical surface is

(a) 4πR² E
(b) πR²E
(c) 2πR² E
(d) 4/3 π R² E

Deselect Answer

(a)

(b)

(c)

(d)
None

11. A gaussian surface S encloses two charges q₁ and q₂ as shown in the figure. The electric field at P is

Deselect Answer

(a)

(b)

(c)

(d)
None

12. In Young’s double slit experiment with a mono – chromatic light of wavelength 4000A°, the fringe width is found to be 0.4 mm. When the slits are now illuminated with a light of wavelength 5000A° the fringe width will be

(a) 0.32mm
(b) 0.5mm
(c) 0.6mm
(d) 0.8mm

Deselect Answer

(a)

(b)

(c)

(d)
None

13. If m is the mass of an electron and c the speed of light, the ratio of the wavelength of a photon of energy E to that of the electron of the same energy is

Deselect Answer

(a)

(b)

(c)

(d)
None

14. If alpha particle, proton and electron move with the same momentum, them their respective de Broglie wavelengths λα, λp, λe are related as

a) λα=λp=λe
b) λα<λp<λe
c) λα>λp>λe
d) λp>λe>λα
Deselect Answer

(a)

(b)

(c)

(d)
None

15. Assertion: Sound waves cannot be polarised.
Reason: Sound waves are longitudinal in nature.

a) If both assertion and reason are true but reason is not the correct explanation of assertion.
b) If assertion is true but reason is false.
c) If both assertion and reason are true and reason is the correct explanation of assertion.
d) If both assertion and reason are false.
Deselect Answer

(a)

(b)

(c)

(d)
None

16. What is the only incorrect relation for photon?

a) Its rest mass is zero
b) Its energy is E = hv
c) Its momentum is P =hv/c
d) It does not exert pressure
Deselect Answer

(a)

(b)

(c)

(d)
None

17. The binding energy of the nucleus of ₂He⁴ is ( m_p=1.0073 u and m_n=1.0086 u )

a) 28.4 MeV
b) 7.1 MeV
c) 14.2 MeV
d) 4.002 MeV
Deselect Answer

(a)

(b)

(c)

(d)
None

18. The number of neutrons released during the fission reaction is

a) 1
b) 3
c) 2
d) 4
Deselect Answer

(a)

(b)

(c)

(d)
None

19. The most abundant element in the universe is

a) Hydrogen
b) Helium
c) Oxygen
d) Carbon
Deselect Answer

(a)

(b)

(c)

(d)
None

20. The volume occupied by an atom is greater than the volume of the nucleus by a factor of about

a) 10
b) 10⁵
c) 10¹⁰ d) 10¹⁵Deselect Answer

(a)

(b)

(c)

(d)
None

February 6, 2025
NEET TEST SERIES 71 BIOLOGY

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February 5, 2025
NEET TEST SERIES 70 BIOLOGY

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February 5, 2025
NEET TEST SERIES 69 BIOLOGY

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February 5, 2025
NEET TEST SERIES 68 BIOLOGY

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February 5, 2025
NEET TEST SERIES 66 CHEMISTRY

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February 5, 2025
NEET TEST SERIES 63 PHYSICS

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February 5, 2025
NEET TEST SERIES 61 BIOLOGY

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February 4, 2025

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