NSO Level 1- Science Olympiad (SOF) Class 9: Questions 644 - 649 of 2138
Choose Programs:
🎯 2138 MCQs (& PYQs) with Full Explanations (2024-2025 Exam)
Rs. 550.00 -OR-
3 Year Validity (Multiple Devices)
CoverageDetailsSample Explanation
Help me Choose & Register (Watch Video) Already Subscribed?
Question 644
Question MCQ▾
An artificial satellite moves in the orbits of radius around the earth. The acceleration of such a satellite assuming that the only force acting on it is that due to the earth is:
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |
Question 646
Question MCQ▾
Exit of water in sponges takes place through
Choices
Choice (4) | Response | |
---|---|---|
a. | Osculum | |
b. | Cloaca | |
c. | Ostia | |
d. | None of the above |
Question 647
Question MCQ▾
If identical particles of masses and are moving with velocities and , respectively; then the ratio of their kinetic energy is:
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |
Question 648
Question MCQ▾
Animals that don՚t have backbone is known as
Choices
Choice (4) | Response | |
---|---|---|
a. | Vertebrate | |
b. | Annelids | |
c. | Invertebrate | |
d. | Arthropods |
Question 649
Question MCQ▾
If two bodies are in contact, then the direction of force of friction between these two bodies is:
Choices
Choice (4) | Response | |
---|---|---|
a. | Parallel to the contact surface | |
b. | Inclined at to the contact surface | |
c. | Normal to the contact surface | |
d. | Inclined at to the contact surface |