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

The ground state energy of hydrogen atom is $$-13.6 ~\mathrm{eV}$$. The energy needed to ionize hydrogen atom from its second excited state will be :

A
$$13.6 ~\mathrm{eV}$$
B
$$6.8 ~\mathrm{eV}$$
C
$$1.51 ~\mathrm{eV}$$
D
$$3.4 ~\mathrm{eV}$$
2
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
Change Language

The escape velocity of a body on the earth surface is $$11.2 \mathrm{~km} / \mathrm{s}$$. If the same body is projected upward with velocity $$22.4 \mathrm{~km} / \mathrm{s}$$, the velocity of this body at infinite distance from the centre of the earth will be:

A
$$11.2 \sqrt{2} \mathrm{~km} / \mathrm{s}$$
B
Zero
C
$$11.2 \mathrm{~km} / \mathrm{s}$$
D
$$11.2 \sqrt{3} \mathrm{~km} / \mathrm{s}$$
3
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
Change Language

A lens is made up of 3 different transparent media as shown in figure. A point object O is placed on its axis beyond $$2f$$. How many real images will be obtained on the other side?

NEET 2023 Manipur Physics - Geometrical Optics Question 7 English

A
2
B
1
C
No image will be formed
D
3
4
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
Change Language

The diameter of a spherical bob, when measured with vernier callipers yielded the following values : $$3.33 \mathrm{~cm}, 3.32 \mathrm{~cm}, 3.34 \mathrm{~cm}, 3.33 \mathrm{~cm}$$ and $$3.32 \mathrm{~cm}$$. The mean diameter to appropriate significant figures is :

A
$$3.328 \mathrm{~cm}$$
B
$$3.3 \mathrm{~cm}$$
C
$$3.33 \mathrm{~cm}$$
D
$$3.32 \mathrm{~cm}$$
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