Light - Study Mode
[#241] A curved mirror where the reflecting surface is curved inwards is called a
Correct Answer
(A) concave mirror
[#242] Which of the following statements about optical microscope is/are correct? 1. Both the eyepiece and objective of a microscope are convex lenses. 2. The magnification of a microscope increases with increases in focal length of the objective. 3. The magnification of a microscope depends upon the length of the microscope tube. 4. The eyepiece of a microscope is a concave lens. Select the correct answer:
Correct Answer
(A) 1 and 3
[#243] The Sun appears red during Sunset
Correct Answer
(B) Scattering of light
[#244] Which one of the following statements is correct about the magnification of an optical microscope?
Correct Answer
(D) Magnification decreases with the increase in focal length of eyepiece
[#245] What is formula of mirror?
Correct Answer
(C) $$frac{1}{u} + frac{1}{v} = frac{1}{f}$$