Question
We are able to see the T.V. channels clearly when we set T.V. on auto-tuning
We are able to see the T.V. channels clearly when we set T.V. on auto-tuning. (a) Which phenomenon led to the clear…
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Question
Complete the following nuclear changes
(a) Complete the following nuclear changes: (b) Name the nuclear radiation which has the highest ionizing power.
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Which characteristic of sound is affected due to the larger surface of a school bell
(a) Which characteristic of sound is affected due to the larger surface of a school bell? (b) Calculate the distance covered by…
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A car of mass 120 kg is moving at a speed 18 km/h
A car of mass 120 kg is moving at a speed 18 km/h and it accelerates to attain a speed of 54…
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A metre scale of weight 50 gf can be balanced at 40 cm mark
A metre scale of weight 50 gf can be balanced at 40 cm mark without any weight suspended on it. (a) If…
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A block and tackle system of pulleys has velocity ratio 4
A block and tackle system of pulleys has velocity ratio 4. (a) Draw a labelled diagram of the system indicating clearly, the…
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Infrared radiations are used in warfare
(a) Infrared radiations are used in warfare. Explain with reason, why. (b) A ray of light is incident at 45° on an…
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A coin kept inside water when viewed from air appears to be raised by 3.0 mm
(a) A coin kept inside water [μ = 4/3] when viewed from air in a vertical direction appears to be raised by…
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A convex lens of focal length 10 cm is placed at a distance of 60 cm from a screen
A convex lens of focal length 10 cm is placed at a distance of 60 cm from a screen. How far from…
Question
The diagram below shows two parallel rays A Orange and B Blue incident from air on air-glass boundary
The diagram below shows two parallel rays A (Orange) & B (Blue) incident from air, on air-glass boundary. (a) Copy and complete…