1
NEET 2019
MCQ (Single Correct Answer)
+4
-1
In an experiment, the percentage of error occurred in the measurement of physical quantities A, B, C and D are 1%, 2 %, 3 %and 4 % respectively. Then the maximum percentage of error in the measurement X, where
X = $${{{A^2}{B^{1/2}}} \over {{C^{1/3}}{D^3}}}$$, will be :
A
16%
B
-10%
C
10%
D
$$\left( {{3 \over {13}}} \right)$$%
2
NEET 2019
MCQ (Single Correct Answer)
+4
-1
The displacement of a particle executing simple harmonic motion is given by

y = A0 + A sin$$\omega $$t + B cos$$\omega $$t.

Then the amplitude of its oscillation is given by :
A
$$\sqrt {{A^2} + {B^2}} $$
B
A + B
C
A + $$\sqrt {{A^2} + {B^2}} $$
D
$$\sqrt {A_0^2 + {{\left( {A + B} \right)}^2}} $$
3
NEET 2019
MCQ (Single Correct Answer)
+4
-1
An electron is accelerated through a potential difference of 10,000 V. Its de Broglie wavelength is (nearly) : (me = 9 $$ \times $$ 10–31 kg)
A
12.2 × 10–12 m
B
12.2 × 10–13 m
C
12.2 × 10–14 m
D
12.2 nm
4
NEET 2019
MCQ (Single Correct Answer)
+4
-1
A mass m is attached to a thin wire and whirled in a vertical circle. The wire is most likely to break when :
A
the wire is horizontal
B
inclined at an angle of 60o from vertical
C
the mass is at the lowest point
D
the mass is at the highest point
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