Multiple Choice Question on Basic Concept of Science Class XI Standard Practice Test 5
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This is a mock drill question bank on Basic Concept of Science of Class XI and XII standard. This is the question bank of 10 questions with set for 10 minutes. After you finish the test, press Quiz Finish and you will get the answer sheet, your result and its comparison with others. You will also be given remarks containing the explanation about the answer and also about the distracters (other options) to build confidence on the subject.
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Sr No Question Answer Remarks 1 A truck starts from rest and accelerate at 2m/sec². After 10 second a person standing at 6 meter height, drops a stone. What is its velocity? 20 m/sec horizontal Velocity is a vector quantity and to be expressed with direction. The direction in the present case is same as that of moving vehicle as per fist law of Newton’s law of motion 2 A person weighing 50 Kg lifts a mass of 25 Kg by a rope from a well once without pulley arrangement and next time with pulley arrangement. What is the reaction on the ground when lifting with pulley arrangement? ( g = 10 m/sec²) 250 N When lifting the weight through the pulley, the reaction force on the pulley will W+T=2W i.e. 500 N. The reaction on the surface will than become 250 N. 3 The relationship of linear expansion of long rod due to rise in temperature is given as δL/L is proportional to δt It is the change of per unit length proportional to rise in temperature. If the length is doubled, than rise will also double for the same rise in temperature. 4 Coefficient of viscosity for a fluid is defined as the ratio of shearing stress/strain rate The strain in a flowing fluid increases with time continuously and experimentally found depend on rate of change of strain or strain rate. 5 Why the earth surface warms up quickly during day and cools quickly during night in desert? due to low specific heat of sand The substance having low specific heats up fast. The specific heat of sand, concrete, iron is 830, 880 and 490 J/Kg °C respectively 6 A pump on the ground floor is required to pump 30 meter cube water to a 40 m height over head tank in 15 minutes. What power of pump is required when the efficiency of pump is 33%. 40 kW Energy required to mgh and power is mgh/t. In the present case weight of water is 30 meter cube and density1000 Kg/meter cube and we get (30*1000*10*30)/(15*60*0.33)= 40 kW 7 Two objects A which is heavy and B which is lighter are thrown from the top of a 100 m building at the same time. Which object will reach the ground first? Both at the same time Both the objects will reach at the same time because weight has no effect on the average speed of travel. 8 For any arbitration motion in space, the following relation for calculation average velocity holds true v (average)= [r̅(t₁)+r̅(t₂)](t₂-t₁) Average stands for average of quantity over the time interval(t₂-t₁) 9 A stationary person is watching another person in a convex mirror moving at a constant speed towards him. He will observe the speed increasing as he approaches the mirror In the standard equation of mirror 1/v+1/u=1/f, if we put the value of u at different time, the image location v is not uniform but keep on reducing therefore the image will appear moving fast on approach 10 Visible light spectrum wavelenth is between 400-700 nm Visible light spectrum shall be gone through with information where radio, microwave, x-ray and gamma rays lies. -
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Question 1 of 10
1. Question
A truck starts from rest and accelerate at 2m/sec². After 10 second a person standing at 6 meter height, drops a stone. What is its velocity?
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Question 2 of 10
2. Question
A person weighing 50 Kg lifts a mass of 25 Kg by a rope from a well once without pulley arrangement and next time with pulley arrangement. What is the reaction on the ground when lifting with pulley arrangement? ( g = 10 m/sec²)
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Question 3 of 10
3. Question
The relationship of linear expansion of long rod due to rise in temperature is given as
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Question 4 of 10
4. Question
Coefficient of viscosity for a fluid is defined as the ratio of
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Question 5 of 10
5. Question
Why the earth surface warms up quickly during day and cools quickly during night in desert?
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Question 6 of 10
6. Question
A pump on the ground floor is required to pump 30 meter cube water to a 40 m height over head tank in 15 minutes. What power of pump is required when the efficiency of pump is 33%.
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Question 7 of 10
7. Question
Two objects A which is heavy and B which is lighter are thrown from the top of a 100 m building at the same time. Which object will reach the ground first?
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Question 8 of 10
8. Question
For any arbitration motion in space, the following relation for calculation average velocity holds true
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Question 9 of 10
9. Question
A stationary person is watching another person in a convex mirror moving at a constant speed towards him. He will observe the speed
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Question 10 of 10
10. Question
Visible light spectrum wavelenth is between
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