Choose the most appropriate answer from the options given below :
A
(a)-(ii), (b)-(iv), (c)-(i), (d)-(iii)
B
(a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)
C
(a)-(iii), (b)-(ii), (c)-(iv), (d)-(i)
D
(a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
2
JEE Main 2021 (Online) 26th August Evening Shift
MCQ (Single Correct Answer)
+4
-1
If the length of the pendulum in pendulum clock increases by 0.1%, then the error in time per day is :
A
86.4 s
B
4.32 s
C
43.2 s
D
8.64 s
3
JEE Main 2021 (Online) 26th August Morning Shift
MCQ (Single Correct Answer)
+4
-1
In a Screw Gauge, fifth division of the circular scale coincides with the reference line when the ratchet is closed. There are 50 divisions on the circular scale, and the main scale moves by 0.5 mm on a complete rotation. For a particular observation the reading on the main scale is 5 mm and the 20th division of the circular scale coincides with reference line. Calculate the true reading.
A
5.00 mm
B
5.25 mm
C
5.15 mm
D
5.20 mm
4
JEE Main 2021 (Online) 26th August Morning Shift
MCQ (Single Correct Answer)
+4
-1
If E, L, M and G denote the quantities as energy, angular momentum, mass and constant of gravitation respectively, then the dimensions of P in the formula P = EL2M$$-$$5G$$-$$2 are :
