Do not carry the ……….. objects while travelling in the train.
A) flammable
B) Stock
C) Secret
D) Valuable
1 Answers
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1. The label of a herbarium sheet does not carry information on
1. (A) height of the plant 2. (C) A museum has collection of photographs of plants and animals.
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An aeroplane A, is travelling in a straight line with a velocity of 300 km/hr with respect to Earth. Another aeroplane B, is travelling
Given: vA = 300 km/hr, vB = 350 km/hr, vCA = 100 km/hr To find: (i) Velocity of plane A relative to B (vA – vB) (ii) Velocity of aeroplane C (vC) Formula: (i) vAB = vA – vB (ii) vCA = vC –...
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`L_(1)` metre train is moving with a velocity of `v_(1)` m/s and another `L_(2)` m/s in opposite dircetion. Find out (i) The time taken by two train t
Correct Answer - (i)`t=(L_(1)+L_(2))/(v_(1)+v_(2))` (ii)`d_(1)=v_(1)xx((L_(1)+L_(2))/(v_(1)+v_(2)))`,d_(2)=v_(2)xx((L_(1)+L_(2))/(v_(1)+v_(2)))`
2 Answers 1 views
When a same force is applied on two different objects. It produces accelerations of `4m/sec^(2)` and `6m/sec^(2)`. In these objects, if the same force
Correct Answer - `a=2.4 m//s^(2)`
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A train travels a distance of 300km at constant speed. If the speed of the train is increased by 5 km/kr, the journey would have taken 2 hours less. F
Correct Answer - 25 km/hr
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Don’t stop the train on a or tunnel where evacuation is not possible.
Answer is (B) Bridge
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Always carry a ………… while walking at night time
Always carry a torch while walking at night time
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A passenger in moving train tosses a coin which falls behind him. It means that the motion of the train is
A) accelerated
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A train travels 2 1/2 hrs at 90 kmph to travel the same distance in 2 hours, how much speed required for the train?
Correct option is (A) \(112\frac12\,km/hrs\) Distance covered by train in \(2\frac12\) hrs = speed \(\times\) time = 90 \(\times\) \(2\frac12\) km = 90 \(\times\) \(\frac52\) km = 45 \(\times\) 5 km = 225 km \(\therefore\) Speed required to covered same distance (225 km) in 2 hours \(=\frac{Distance}{Time}\) \(=\frac{225}2\,km/hrs\) \(=112\frac{1}2\,km/hrs\)
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