Physics MDCAT MCQs
Mechanics, electricity & modern physics MCQs
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Answer: Lens formula: 1/f = 1/v + 1/u.
Answer: v = c/n = 3x10^8/1.5 = 2x10^8 m/s.
Answer: Only transverse waves can be polarized.
Answer: Myopia is corrected with a concave diverging lens.
Answer: R = rho L/A, directly proportional to length.
Answer: Critical angle = sin-1(1/1.5) = 41.8 degrees.
Answer: Convex mirrors provide a wider field of view.
Answer: Convex lens forms virtual enlarged image between F and the lens.
Answer: Req = R/n = 4/2 = 2 ohm for equal resistors in parallel.
Answer: Resolving power depends on wavelength and numerical aperture.
Answer: Energy is measured in Joules.
Answer: P = 1/f = 1/0.25 = 4 diopters.
Answer: Ohm\'s Law: voltage equals current times resistance.
Answer: Same current flows through all components in series.
Answer: Concave mirrors form both real and virtual images.
Answer: Solar radiation pressure pushes the comet\'s tail away from the Sun.
Answer: Fringe width = lambda D/d where D is screen distance, d is slit separation.
Answer: Young\'s experiment proves wave nature of light through interference.
Answer: Ampere (A) is the SI unit of electric current.
Answer: Red light has the longest wavelength (~700 nm) in visible light.