Odisha Board - Class 7

Science question bank (Science (ବିଜ୍ଞାନ - ୭))

Practice 327 free Odisha Board - Class 7 Science (ବିଜ୍ଞାନ - ୭) - Science questions with answers and step-by-step solutions.

Q1.

ବଳ, ଚାପ ଓ ଘର୍ଷଣ (Physics): 'ଉଦ୍ଭିଦରେ ପୋଷଣ' ଅନୁସାରେ ଚାପ $P$ ର ସୂତ୍ର ଓ ଏକକ କ’ଣ?


(A)
$P = \frac{F}{A}$, ଏକକ ପାସ୍କାଲ (\text{N/m}^2) (ଉଦ୍ଭିଦରେ ପୋଷଣ)
(B)
$P = F \times A$
(C)
$P = \frac{{A}}{{F}}$
(D)
ଜୁଲ୍
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Q2.

ଶବ୍ଦ ଓ ବିଦ୍ୟୁତ୍‌ର ରାସାୟନିକ ପ୍ରଭାବ: 'ଉଦ୍ଭିଦରେ ପୋଷଣ' ଶବ୍ଦର ସଞ୍ଚାଳନ ବିଷୟରେ କେଉଁଟି ସତ୍ୟ?


(A)
ଶବ୍ଦ ଶୂନ୍ୟରେ ଗତି କରିପାରେ ନାହିଁ ଏବଂ କଠିନ ମାଧ୍ୟମରେ ସର୍ବାଧିକ ବେଗରେ ଗତି କରେ (ଉଦ୍ଭିଦରେ ପୋଷଣ)
(B)
ଶବ୍ଦ ଶୂନ୍ୟରେ ଦ୍ରୁତତମ ଗତି କରେ
(C)
ଶବ୍ଦ ଏକ ବିଦ୍ୟୁତ୍-ଚୁମ୍ବକୀୟ ତରଙ୍ଗ
(D)
ଏଥିମଧ୍ୟରୁ କୌଣସିଟି ନୁହେଁ
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