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NEET 2027: Most Important Physics Questions — Magnetism & Optics
NEET Physics • 10 questions • Free on ExamBattle
Practice Questions
Q1
The SI unit of magnetic field (B) is:
- A. Gauss
- B. Tesla
- C. Weber
- D. Henry
Q2
The force between two parallel wires carrying currents I₁ and I₂ separated by distance d (per unit length) is:
- A. μ₀I₁I₂/πd
- B. μ₀I₁I₂/2πd
- C. μ₀I₁I₂/4πd
- D. μ₀I₁I₂d/2π
Q3
Myopia (short-sightedness) is corrected by a:
- A. Convex lens
- B. Concave lens
- C. Cylindrical lens
- D. Bifocal lens
Q4
The energy of a photon of wavelength 600 nm is approximately (h = 6.6×10⁻³⁴ J·s, c = 3×10⁸ m/s):
- A. 2.07 eV
- B. 1.07 eV
- C. 3.07 eV
- D. 4.14 eV
Q5
The current gain (β) of a transistor in CE configuration is 100. If base current = 20 μA, collector current is:
- A. 0.2 mA
- B. 2 mA
- C. 20 mA
- D. 200 μA
Q6
The focal length of a concave mirror is 15 cm. Object at 45 cm. Image distance is:
- A. 22.5 cm in front
- B. 30 cm behind
- C. 45 cm in front
- D. 90 cm in front
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