Modern Physics JEE Mains Questions. We covered all the Modern Physics JEE Mains Questions in this post for free so that you can practice well for the exam.
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Modern Physics JEE Mains Objective Questions for Students
A ray of light, when refracted, undergoes a change in velocity. In this context, which of the following statements is correct?
(a) Velocity increases as the ray passes from a rarer to a denser medium.
(b) Velocity decreases as the ray passes from a denser to a rarer medium.
(c) Velocity decreases as the ray passes from a rarer to a denser medium.
(d) Change of velocity does not depend on the nature of the medium.
Option c – Velocity decreases as the ray passes from a rarer to a denser medium
An object is placed at the center of curvature of a concave mirror with a focal length of 16 cm. If the object is shifted by 8 cm towards the focus, then the nature of the image would be
(a) real and magnified.
(b) virtual and magnified.
(c) real and reduced.
(d) virtual and reduced.
Option a – real and magnified
Magnification is
(a) the actual size of the specimen/observed size.
(b) observed size of the specimen/actual size.
(c) the actual size of the specimen – observed size.
(d) observed size of the specimen/actual size.
Option b – observed size of the specimen/actual size
When light passes from one medium to another, the phenomenon of change in its direction is called ….
(a) Refraction
(b) Diffraction
(c) Propagation
(d) No option is correct
Option a – Refraction
When a ray of light travels from a denser medium to a rarer medium, it bends
(a) toward the normal and slows down.
(b) away from the normal and speeds up.
(c) away from the normal and slows down.
(d) towards the normal and speeds up.
Option b – away from the normal and speeds up
When a ray of light enters a glass slab, then
(a) only the frequency changes.
(b) frequency and velocity change.
(c) frequency does not change.
(d) frequency and wavelength change.
Option c – frequency does not change
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