(A) Increases
(B) Decreases
(C)Remains same
(D) Becomes zero
Answer: (A) Increases
If we narrow the distance between two slits in Young’s experiment the fringes width will be increases.
Category: Physics MCQs Class 11
Physics MCQs questions with answers of class 11 or first year. HSSC Part-I physics multiple choice questions from past papers.
The point to which the light rays are brought to focus is known as :
(A) Principle Focus
(B) Optical Axis
(C) Centre of curvature
(D) Centre of mass
Answer: (A) Principle Focus
The point to which the light rays are brought to focus is known as principle focus.
The distance between two consecutive crests or troughs is called:
(A) pitch
(B) wavelength
(C) frequency
(D) velocity
Answer: (B) wavelength
The distance between two consecutive crests or troughs is called wavelength.
Replacement a bright fringe by the next bright fringe in Michelson’s Interferometer the moveable mirror is moved through a distance equal to:
(A) λ / 4
(B) λ / 2
(C) 2λ
(D) λ
Answer: (A) λ / 4