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

If $$\overrightarrow F = 2\widehat i + \widehat j - \widehat k$$ and $$\overrightarrow r = 3\widehat i + 2\widehat j - 2\widehat k$$, then the scalar and vector products of $$\overrightarrow F $$ and $$\overrightarrow r $$ have the magnitudes respectively as

A
10, 2
B
5, $$\sqrt 3 $$
C
4, $$\sqrt 5 $$
D
10, $$\sqrt 2 $$
2
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language

The physical quantity that has the same dimensional formula as pressure is

A
Coefficient of viscosity
B
Force
C
Momentum
D
Young's modulus of elasticity
3
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language

The effective capacitances of two capacitors are 3 $$\mu$$F and 16 $$\mu$$F, when they are connected in series and parallel respectively. The capacitance of two capacitors are :

A
1.2 $$\mu$$F, 1.8 $$\mu$$F
B
10 $$\mu$$F, 6 $$\mu$$F
C
8 $$\mu$$F, 8 $$\mu$$F
D
12 $$\mu$$F, 4 $$\mu$$F
4
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language

After passing through a polariser a linearly polarised light of intensity I is incident on an analyser making an angle of 30$$^\circ$$ with that of the polariser. The intensity of light emitted from the analyser will be

A
$${{2I} \over 3}$$
B
$${I \over 2}$$
C
$${I \over 3}$$
D
$${{3I} \over 4}$$
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