Jharkhand Board (JAC) - Class 9

Physics (भौतिकी) question bank (Science (विज्ञान - भौतिकी, रसायन, जीवविज्ञान))

Practice 456 free Jharkhand Board (JAC) - Class 9 Science (विज्ञान - भौतिकी, रसायन, जीवविज्ञान) - Physics (भौतिकी) questions with answers and step-by-step solutions.

Q1.

भौतिक विज्ञान (JAC 10th Board): 'गति (Motion)' लेंस की क्षमता $P$ का सूत्र और मात्रक क्या है?


(A)
$P = \frac{1}{f}$ (फोकस दूरी मीटर में), मात्रक डाइऑप्टर (D) (गति (Motion))
(B)
$P = f^2$
(C)
$P = \frac{{f}}{{100}}$
(D)
वाट
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Q2.

रसायन शास्त्र (अम्ल, क्षारक एवं लवण): 'गति (Motion)' बेकिंग सोडा / विरंजक चूर्ण का रासायनिक सूत्र क्या है?


(A)
$\text{NaHCO}_3$ (सोडियम हाइड्रोजन कार्बोनेट) अथवा $\text{CaOCl}_2$ (गति (Motion))
(B)
$\text{{Na}}_2\text{{CO}}_3$
(C)
$\text{{NaCl}}$
(D)
$\text{{NaOH}}$
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