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पद्यांशं पठित्वा निर्दिष्टे कृती: कुरुत।
| गुरुणा शोभते शिष्य:, शिष्येणापि गुरुस्तथा। उभाभ्यां शोभते शाला, शालया शोभते पुरम्। |
(क) पूर्णवाक्येन उत्तरत। (2 तः 1) 1
- गुरुणा क: शोभते?
- पुरं कया शोभते?
(ख) समानार्थकं शब्दं लिखत। 1
गुरुः - ______।
Concept: अपठितम्
पद्यांशं पठित्वा जालरेखाचित्रं पूरयत।
| पक्षिणां बलम् आकाशं, बालानां रोदनं बलम्। दुर्बलस्य बलं राजा, मत्स्यानाम् उदकं बलम् || |
Concept: अपठितम्
What will be the weight of a person on earth, who weighs 9N on the moon?
Concept: Free Fall
A ball falls off a table and reaches the ground in 1 s. Assuming g=10 m/s2, calculate its speed on reaching the ground and the height of the table.
Concept: Free Fall
i) If g = GM/r2 then where will the value of g be high at Goa Beach or on top of Mount Everest?
Concept: Free Fall
Identify the law shown in the figure and state three respective laws.
Concept: Kepler’s Laws
For freely falling object we can write the Newton’s second equation of motion as …..
Concept: Free Fall
A metal ball of mass 5 kg falls from a height of 490 m. How much time it will take to reach the ground? (g = 9.8 m/s2)
Concept: Free Fall
What would be the value of ‘g’ on the surface of the earth if its mass was twice and its radius half of what it is now?
Concept: Free Fall
The value of universal gravitational constant (G) in the SI unit is ______.
Concept: Newton's Universal Law of Gravitation
Give scientific reasons for the following:
Newton's gravitational law is the universal law of gravitation.
Concept: Newton's Universal Law of Gravitation
Calculate the escape velocity on the surface of the moon given the mass and radius of the moon to be 7.34 × 1022 kg and 1.74 × 106 m respectively.
(Given: G = 6.67 × 10-11 Nm2/kg2)
Concept: Free Fall
Observe the figure and answer the questions:
- State Newton's universal law of gravitation.
- If the distance between the two bodies is tripled, how will the gravitational force between them change?
- What will happen to gravitational force, if mass of one of the object is doubled?
Concept: Newton's Universal Law of Gravitation
Fill in the blank:
The modern periodic table consists of ……………. periods.
Concept: The Modern Periodic Table
Fill in the blank:
The formulae of chloride of metal M is MCl2. The metal M belongs to ……………. group.
Concept: Periods and Electronic Configuration
The element eka-silicon in Mendeleev’s periodic table is known as ………… in the modern periodic table.
Concept: Mendeleev’s Periodic Table >> Insights into Mendeleev’s Periodic Table
Elements in the same group show the same valency. Give scientific reason.
Concept: Periods and Electronic Configuration
