Tamil Nadu (English Medium) Plus 1 Biology Science Study Materials, Online Learning, Question Papers, Classnotes, Practice Test, MCQ | Smartindia Educational Program : www.smartindia.net.in


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Question-1
The water drops fall at regular intervals from a tap 5 m above the ground. The third drop is leaving the tap at an instant when the first drop touches the ground. How far above the ground is the second drop at that instant?( Take g = 10m/s²)

(A) 1.25 m	(B)2.50 m
(C)3.75 m	(D)5.00 m

Question-2
Three different objects of masses m₁, m₂ and m₃ are allowed to fall from rest and from the same point O along three different friction less paths. The speeds of the three objects on reaching the ground will be in the ratio of

(A) m₁: m₂ : m₃	(B) m₁ : 2m₂: 3m₃
(C) 1 : 1 : 1	(D)

Question-3
If a car at rest accelerates uniformly to a speed of 144 km/h in 20 s, it covers a distance of

(A) 2880 m	(B)1440 m
(C)400 m	(D)20 m

Question-4
A car is moving along a straight road with a uniform acceleration. It passes through two points P and Q separated by a distance with velocity 30 km/h and 40 km/h respectively. The velocity of the car midway between P and Q is

(A) 33.3 km/h	(B) 20 √2 km/h
(C) 25 √2 km/h	(D) 0.35 km/h

Question-5
A train of 150 m length is going towards north direction at a speed of 10m/s. A parrot flies at the speed of 5 m/s towards south direction parallel to the railways track.The time taken by the parrot to cross the train is

(A) 12 s	(B)8 s
(C)15 s	(D)10 s

Question-6
The displacement of a body is given to be proportional to the cube of time elapsed. The magnitude of the acceleration of the body is

(A) increasing with time	(B)decreasing with time
(C)constant but not zero	(D)zero

Question-7
The ratios of the distance covered by a freely falling particle, starting from rest in the first, second, third ... nth seconds of its motion

(A) Form the series corresponding to the squares of the first n natural numbers	(B) Form an A.P.
(C) Form a series corresponding to the difference of the squares of the successive natural numbers	(D) Both choices (b) and (c) are correct

Question-8
An athlete completes one round of a circular track of radius r in 40 seconds. What will be his displacement at the end of 2 min and 20 seconds?

(A) zero	(B)2 R
(C) 2 π R	(D) 7 π R

Question-9
A car covers the first – half of the distance between two places at 40 km/h and other half at 60km/h. The average speed of the car is

(A) 40 km/h	(B) 48 km/h
(C) 50 km/h	(D) 60 km/h

Question-10
A body falling from rest describes distances S₁, S₂ and S₃ in the first, second and third seconds of its fall. The ratio of S₁ : S₂ : S₃ is

(A) 1:2:3	(B)1:3:5
(C)1:1:1	(D)1:4:9

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Plus 1 Biology Science

Tamil Nadu (English Medium)

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