Please select a subject first
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State Faraday’s laws of electromagnetic induction.
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The slope of the distance-time graph at any point gives______.
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State whether true or false. If false, correct the statement.
Hydraulic press is used in the extraction of oil from oil seeds.
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Why does a boat with a hole in the bottom would eventually sink?
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Explain the principle, construction and working of a dc motor.
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Assertion: For observing the traffic at a hairpin bend in mountain paths a plane mirror is preferred over convex mirror and concave mirror.
Reason: A convex mirror has a much larger field of view than a plane mirror or a concave mirror.
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If an object is placed at the focus of a concave mirror, where is the image formed?
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- Complete the diagram to show how a concave mirror forms the image of the object.
- What is the nature of the image?
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Numerical Problem.
What is the heat in joules required to raise the temperature of 25 grams of water from 0°C to 100°C? What is the heat in Calories? (Specific heat of water = `(4.18"J")/("g"°"C")`
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Numerical Problem.
What could be the final temperature of a mixture of 100 g of water at 90 °C and 600g of water at 20°C.
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Numerical Problem.
How much heat energy is required to change 2 kg of ice at 0°C into water at 20°C? (Specific latent heat of fusion of water = 3,34,000 J/kg, Specific heat capacity of water = 4200 JKg–1K–1).
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India’s first satellite is ______.
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State whether true or false. If false, correct the statement.
Satellites nearer to the Earth should have lesser orbital velocity.
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Define time period of a satellite.
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What is a satellite? What are the two types of satellites?
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Name the apparatus that you will use to separate the components of mixtures containing two,
- miscible liquids,
- immiscible liquids
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Name the components in each of the following mixtures.
- Ice cream
- Lemonade
- Air
- Soil
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The correct electronic configuration of potassium is ______.
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State true or false. If false, correct the statement.
The maximum number of electron in L Shell is 10.
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