Question

(2) निम्नलिखित शब्दों के लिंग पहचानकर लिखिए :
(i) दादुर
(ii) धूरी (धूल) -
(iii) धर्म
(iv) प्रजा
3:(सरल अर्थी​

Answer 1

(a) If half part of a convex lens is covered, the focal length does not change, but the intensity of image decreases.

(b) A convex lens is placed in water. Its focal length will increase.

(c) The focal length of a thin convex lens is more than that of a thick convex lens.

Answer 2

Answer:

pulling

stri ling

puling

stri ling