Question

8th A,B,C MATHS TEST Q. 1 : fill in the blanks. Max. Marks = 20 1] 28+33=------ 2] (-6)+(-7)=----- 3] (-6)+3=----- 4] 28-35=------ 5] 46-25=------ 6] -31-4=------ 7] 16×7=------ 8] (-22)×(-6)=----- 9] 26×(-12)=----- 10] 148÷4=------ 11] (-84)÷(-14)=----- 12] (-78)÷26=------ 13] 18+(-23)=------ 14] (-9)×21=------ 15] (-87)÷29=------ 16] 4×(7+8)=----- 17] 91÷13×6=------ 18] (47-27)×3-31=----- 19] (41-23)÷6+5=------ 20] 48÷8×4+7-15=-----​

Answer 1

if (y - 25 degrees) and (y+35degrees) form a linear pair , then the measure of angle areOriginally Answered: How can we see objects that do not produce their own light? Objects that do not produce their own light are called non luminous objects and they are visible to us when light coming from luminous objects fall on them and after reflecting reach our eyes.Photography is the art, application, and practice of creating durable images by recording light, either electronically by means of an image sensor, or chemically by means of a light-sensitive material such as photographic film.

Answer 2

Answer:

When atoms are excited they emit light of certain wavelengths which correspond to different colors. The emitted light can be observed as a series of colored lines with dark spaces in between; this series of colored lines is called a line or atomic spectra.