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NEET Quick: Optics & Magnetism
NEET Physics • 10 questions • Free on ExamBattle
Practice Questions
Q1
The focal length of a concave mirror is 15 cm. The radius of curvature is:
- A. 15 cm
- B. 30 cm
- C. 7.5 cm
- D. 45 cm
Q2
The refractive index of a medium where the speed of light is 2 × 10⁸ m/s is:
- A. 2
- B. 1.5
- C. 1.33
- D. 1.2
Q3
A current-carrying conductor placed in a magnetic field experiences a force. This is known as:
- A. Faraday's law
- B. Lorentz force
- C. Coulomb's law
- D. Lenz's law
Q4
The SI unit of magnetic flux is:
- A. Tesla
- B. Weber
- C. Henry
- D. Gauss
Q5
Which type of lens is used to correct myopia (short-sightedness)?
- A. Convex lens
- B. Concave lens
- C. Cylindrical lens
- D. Bifocal lens
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