NEET-UG 2024 · Code T1

A wire of length ‘l’ and resistance 100 Ω is divided into 10 equal parts. The first 5 parts are connected in series while the next 5 parts are connected in parallel. The two combinations are again connected in series. The resistance of this final combination is:

1. A55 Ω
2. B60 Ω
3. C26 Ω
4. D52 Ω

The mass of a planet is 1/10th that of the earth and its diameter is half that of the earth. The acceleration due to gravity on that planet is :

1. A4.9 m s⁻²
2. B3.92 m s⁻²
3. C19.6 m s⁻²
4. D9.8 m s⁻²

If c is the velocity of light in free space, the correct statements about photon among the following are :

1. AThe energy of a photon is E = hν.
2. BThe velocity of a photon is c.
3. CThe momentum of a photon, p = hν/c.
4. DIn a photon-electron collision, both total energy and total momentum are conserved.
5. EPhoton possesses positive charge. Choose the correct answer from the options given below :

The maximum elongation of a steel wire of 1 m length if the elastic limit of steel and its Young’s modulus, respectively, are 8 × 10⁸ N m⁻² and 2 × 10¹¹ N m⁻², is :

1. A40 mm
2. B8 mm
3. C4 mm
4. D0.4 mm

The moment of inertia of a thin rod about an axis passing through its mid point and perpendicular to the rod is 2400 g cm². The length of the 400 g rod is nearly :

1. A20.7 cm
2. B72.0 cm
3. C8.5 cm
4. D17.5 cm

In a vernier calipers, (N + 1) divisions of vernier scale coincide with N divisions of main scale. If 1 MSD represents 0.1 mm, the vernier constant (in cm) is :

1. A100N
2. B10 (N + 1)
3. C1/(10N)
4. D1/[100(N + 1)]

Match List I with List II. List I (Spectral Lines of Hydrogen for transitions from)

1. An₂ = 3 to n₁ = 2
2. Bn₂ = 4 to n₁ = 2
3. Cn₂ = 5 to n₁ = 2
4. Dn₂ = 6 to n₁ = 2 List II (Wavelengths (nm)) I. 410.2 II. 434.1 III. 656.3 IV. 486.1 Choose the correct answer from the options given below :

If the monochromatic source in Young’s double slit experiment is replaced by white light, then

1. Athere will be a central bright white fringe surrounded by a few coloured fringes.
2. Ball bright fringes will be of equal width.
3. Cinterference pattern will disappear.
4. Dthere will be a central dark fringe surrounded by a few coloured fringes.