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The gravitational force causes (A) Tides (B) None of them (C) Motion of moon (D) Both (a) and (c)

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If energy(E), velocity (V) and force (F) be taken as fundamental quantity, then what are the dimension of mass ?

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CBSE Class 9 Science Syllabus 2022-23 PDF Download : Check Course Content & Details of Annual Assessment

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How will the image formed by a convex lens be affected if the central portion of lens is wrapped in black paper ?

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A ball is dropped from the top of a tower of height 100m. Simultaneously, another ball was thrown upward from the bottom of the tower with a speed of 25m/s (g=10ms2 ). These two balls would cross each other after a time: A) 1 second B) 2 second C) 3 second D) 4 second

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If a ball is thrown vertically upwards with 40m/s its velocity after two seconds will be:-

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The gravitational force between two bodies is ′ F ′ . If the mass of each body is doubled and distance between them is halved then the force between them will be :

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Assertion In a simple battery circuit, the point of the lowest potential is positive terminal of the battery. Reason The current flows towards the point of the higher potential, as it does in such a circuit from the negative to the positive terminal. In a simple battery circuit, the point of the lowest potential is positive terminal of the battery.

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Which of the following has more inertia? A five-rupee coin or a one-rupee coin.

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The frequency n of vibration of stretched string depends upon its length l, its mass per unit length m and Tension t in the string Obtain dimensionally an expression for frequency n.

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