JEE Physics - MCQ Practice Questions
Practice free JEE Physics multiple-choice questions with detailed answers and explanations. Perfect for competitive exam preparation.
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Two slits separated by 0.5 mm are illuminated by light of wavelength 500 nm. The distance to the screen is 1 m. Find the fringe width.
A concave mirror has a focal length of 20 cm. An object is placed at the center of curvature. Where will the image form?
A ray of light is incident on a glass slab of thickness 5 cm and refractive index 1.6. If the incident angle is 45°, find the lateral displacement.
The resolving power of a microscope depends on:
When white light passes through a prism, violet light deviates more than red light. This is because:
An object is placed 10 cm from a concave lens of focal length 20 cm. Find the magnification.
Polarization of light proves that light is:
The intensity at a point in the interference pattern of two coherent sources is I₁ and I₂. The resultant intensity is maximum when the phase difference is:
An object is placed at distance u from a convex lens of focal length f. If the magnification is -2, what is the relationship between u and f?
In Young's double-slit experiment with slit separation d = 1 mm and distance to screen D = 1 m, if the 5th bright fringe is at 2.5 mm from the center, what is the wavelength of light?
A ray undergoes total internal reflection at a critical angle θc. If the refractive index of the denser medium is √2, what is θc?
A concave lens of focal length -20 cm is used to form an image of an object placed 10 cm from it. What is the nature of the image?
In a Newton's rings experiment, the diameter of the 10th dark ring is 0.5 cm. What is the diameter of the 5th dark ring?
A ray of light is incident on a glass slab at 60°. If the refractive index of glass is √3, what is the angle of refraction?
A prism has apex angle A = 60° and refractive index n = √3. What is the minimum angle of deviation?
An object moves towards a concave mirror of focal length 15 cm. Initially at 30 cm, it moves to 20 cm. How does the magnification change?
In an optical fiber, light undergoes total internal reflection. If the core has n = 1.5 and cladding has n = 1.48, what is the critical angle inside the core?
A lens combination has two lenses with powers P₁ = +10 D and P₂ = +5 D placed in contact. What is the focal length of the combination?
A convex lens of power 5 diopters is placed at 15 cm from a plane mirror. An object is kept at 30 cm from the lens (on the opposite side of mirror). What is the position of final image?
In a single slit diffraction pattern, the first minimum occurs at an angle of 30°. If the slit width is doubled, at what angle will the first minimum occur?