1
JEE Main 2023 (Online) 11th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

If force (F), velocity (V) and time (T) are considered as fundamental physical quantity, then dimensional formula of density will be :

A
$$\mathrm{FV}^{-2} \mathrm{~T}^{2}$$
B
$$\mathrm{FV}^{4} \mathrm{~T}^{-6}$$
C
$$\mathrm{F}^{2} \mathrm{~V}^{-2} \mathrm{~T}^{6}$$
D
$$\mathrm{FV}^{-4} \mathrm{~T}^{-2}$$
2
JEE Main 2023 (Online) 11th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

If $$\mathrm{V}$$ is the gravitational potential due to sphere of uniform density on it's surface, then it's value at the center of sphere will be:-

A
$$\frac{3 \mathrm{~V}}{2}$$
B
$$\frac{\mathrm{V}}{2}$$
C
$$\frac{4}{3} \mathrm{~V}$$
D
$$\mathrm{V}$$
3
JEE Main 2023 (Online) 11th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The root mean square speed of molecules of nitrogen gas at $$27^{\circ} \mathrm{C}$$ is approximately : (Given mass of a nitrogen molecule $$=4.6 \times 10^{-26} \mathrm{~kg}$$ and take Boltzmann constant $$\mathrm{k}_{\mathrm{B}}=1.4 \times 10^{-23} \mathrm{JK}^{-1}$$ )

A
91 m/s
B
1260 m/s
C
27.4 m/s
D
523 m/s
4
JEE Main 2023 (Online) 11th April Evening Shift
Numerical
+4
-1
Change Language

As shown in the figure, a plane mirror is fixed at a height of $$50 \mathrm{~cm}$$ from the bottom of tank containing water $$\left(\mu=\frac{4}{3}\right)$$. The height of water in the tank is $$8 \mathrm{~cm}$$. A small bulb is placed at the bottom of the water tank. The distance of image of the bulb formed by mirror from the bottom of the tank is ___________ $$\mathrm{cm}$$.

JEE Main 2023 (Online) 11th April Evening Shift Physics - Geometrical Optics Question 25 English

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