1
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
Change Language

The emf of a cell having internal resistance $$1 \Omega$$ is balanced against a length of $$330 \mathrm{~cm}$$ on a potentiometer wire. When an external resistance of $$2 \Omega$$ is connected across the cell, the balancing length will be :

A
220 cm
B
330 cm
C
115 cm
D
332 cm
2
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
Change Language

A $$1 \mathrm{~kg}$$ object strikes a wall with velocity $$1 \mathrm{~m} \mathrm{~s}^{-1}$$ at an angle of $$60^{\circ}$$ with the wall and reflects at the same angle. If it remains in contact with wall for $$0.1 \mathrm{~s}$$, then the force exerted on the wall is :

A
$$30 \sqrt{3} \mathrm{~N}$$
B
Zero
C
$$10 \sqrt{3} \mathrm{~N}$$
D
$$20 \sqrt{3} \mathrm{~N}$$
3
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
Change Language

The angular momentum of an electron moving in an orbit of hydrogen atom is $$\mathrm{1.5\left(\frac{h}{\pi}\right)}$$. The energy in the same orbit is nearly.

A
$$-1.5$$ eV
B
$$-1.6$$ eV
C
$$-1.3$$ eV
D
$$-1.4$$ eV
4
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
Change Language

A particle is executing uniform circular motion with velocity $$\vec{v}$$ and acceleration $$\vec{a}$$. Which of the following is true?

A
$$\vec{v}$$ is a constant; $$\vec{a}$$ is not a constant
B
$$\vec{v}$$ is not a constant; $$\vec{a}$$ is not a constant
C
$$\vec{v}$$ is a constant; $$\vec{a}$$ is a constant
D
$$\vec{v}$$ is not a constant; $$\vec{a}$$ is a constant
EXAM MAP
Medical
NEETAIIMS
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
Staff Selection Commission
SSC CGL Tier I
CBSE
Class 12