Who discovered infrared rays?
Infrared rays were discovered in 1800 by William Herschel, a British astronomer and composer. He identified these rays while exploring the spectrum beyond the red part of visible light, revealing a type of radiation that is invisible to the eye but detectable as heat.
648.13 ÷ 35.86 + 28.88 × 13.13 – 39.92% of 900.19 = ?
√3970 × √730 - √2400 = ?
'Arman' and 'Malik' initiated a business venture with their individual investments. 'Arman,' who actively participated in the business, received Rs. 2,4...
36.22 of 249.98% + 299.99 ÷ 30.18 = ?
A frog wants to cross the pond. He saw 5 turtle’s shell which can help him to reach at the end of pond. Frog can move either 1 or 2 steps at a tim...
(5.013 – 20.04) = ? + 9.98% of 6199.98
(8.013 – 25.04) = ? + 11.98% of 2399.98
(4.88 × 5.76)2 - ?2 = 39.89 × 19.86
20.05% of 220.05 – 15.15% of 99.99 × 2.02 = ?
(7.992/√?) + √16/? = 14.032/?
