1
JEE Main 2017 (Online) 8th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Which graph corresponds to an object moving with a constant negative acceleration and a positive velocity ?
A
JEE Main 2017 (Online) 8th April Morning Slot Physics - Motion Question 143 English Option 1
B
JEE Main 2017 (Online) 8th April Morning Slot Physics - Motion Question 143 English Option 2
C
JEE Main 2017 (Online) 8th April Morning Slot Physics - Motion Question 143 English Option 3
D
JEE Main 2017 (Online) 8th April Morning Slot Physics - Motion Question 143 English Option 4
2
JEE Main 2017 (Online) 8th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
A 1 kg block attached to a spring vibrates with a frequency of 1 Hz on a frictionless horizontal table. Two springs identical to the original spring are attached in parallel to an 8 kg block placed on the same table. So, the frequency of vibration of the 8 kg block is :
A
$${1 \over 4}Hz$$
B
$${1 \over {2\sqrt 2 }}Hz$$
C
$${1 \over 2}Hz$$
D
$$2$$ $$Hz$$
3
JEE Main 2017 (Online) 8th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
An object is dropped from a height h from the ground. Every time it hits the ground it looses 50% of its kinetic energy. The total distance covered as t $$ \to $$ $$\infty $$ is :
A
3h
B
$$\infty $$
C
$${5 \over 3}$$h
D
$${8 \over 3}$$h
4
JEE Main 2017 (Online) 8th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
In an experiment, a sphere of aluminium of mass 0.20 kg is heated upto 150oC. Immediately, it is put into water of volume 150 cc at 27oC kept in a calorimeter of water equivalent to 0.025 kg. Final temperature of the system is 40oC. The specific heat of aluminium is : (take 4.2 Joule = 1 calorie)
A
378 J/kg $$-$$oC
B
315 J/kg $$-$$oC
C
476 J/kg $$-$$oC
D
434 J/kg $$-$$oC
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