1
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language

The ratio of Coulomb's electrostatic force to the gravitational force between an electron and a proton separated by some distance is 2.4 $$\times$$ 1039. The ratio of the proportionality constant, $$K = {1 \over {4\pi {\varepsilon _0}}}$$ to the gravitational constant G is nearly (Given that the charge of the proton and electron each = 1.6 $$\times$$ 10$$-$$19 C, the mass of the electron = 9.11 $$\times$$ 10$$-$$31 kg, the mass of the proton = 1.67 $$\times$$ 10$$-$$27 kg) :

A
10
B
1020
C
1030
D
1040
2
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language

The position-time (x - t) graph for positive acceleration is

A
NEET 2022 Phase 2 Physics - Motion in a Straight Line Question 5 English Option 1
B
NEET 2022 Phase 2 Physics - Motion in a Straight Line Question 5 English Option 2
C
NEET 2022 Phase 2 Physics - Motion in a Straight Line Question 5 English Option 3
D
NEET 2022 Phase 2 Physics - Motion in a Straight Line Question 5 English Option 4
3
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language

Six charges +q, $$-$$q, +q, $$-$$q, +q, and $$-$$q are fixed at the corners of a hexagon of side d as shown in the figure. The work done in bringing a charge q0 to the centre of the hexagon from infinity is

($${\varepsilon _0}$$ - permittivity of free space)

NEET 2022 Phase 2 Physics - Electrostatics Question 11 English

A
$${{ - {q^2}} \over {4\pi {\varepsilon _0}d}}\left( {6 - {1 \over {\sqrt 2 }}} \right)$$
B
Zero
C
$${{ - {q^2}} \over {4\pi {\varepsilon _0}d}}$$
D
$${{ - {q^2}} \over {4\pi {\varepsilon _0}d}}\left( {3 - {1 \over {\sqrt 2 }}} \right)$$
4
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language

An astronomical refracting telescope is being used by an observer to observe planets in normal adjustment. The focal lengths of the objective and eye piece used in the construction of the telescope are 20 m and 2 cm respectively. Consider the following statements about the telescope :

(a) The distance between the objective and eye piece is 20.02 m

(b) The magnification of the telescope is ($$-$$) 1000

(c) The image of the planet is erect and diminished

(d) The aperture of eye piece is smaller than that of objective

The correct statements are :

A
(a), (b) and (d)
B
(a), (b) and (c)
C
(b), (c) and (d)
D
(c), (d) and (a)
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