1
VITEEE 2023
MCQ (Single Correct Answer)
+1
-0

VITEEE 2023 Physics - Rotational Motion Question 3 English

A uniform cube of side $a$ and mass $m$ rests on a rough horizontal table. A horizontal force $F$ is applied normal to one of the faces at a point that is directly above the centre of the faces at a point that is directly above the centre of the face at a height 3a/4 above the base. The minimum value of F for which the cube begins to topple an edge is (assume that cube does not slide)

A
(mg)/3
B
(mg)/2
C
(2 mg)/3
D
(3 mg)/4
2
VITEEE 2023
MCQ (Single Correct Answer)
+1
-0

Susceptibility of ferromagnetic substance is

A
> 1
B
< 1
C
0
D
1
3
VITEEE 2023
MCQ (Single Correct Answer)
+1
-0

A particle of mass $$10 \mathrm{~kg}$$ moving eastwards with a speed $$10 \mathrm{~m} / \mathrm{s}$$ collides with another particle of the same mass moving northward with the same speed $$10 \mathrm{~m} / \mathrm{s}$$. The two particles coalesce on collision. The new particle of mass $$20 \mathrm{~kg}$$ will move in the north-east direction with velocity.

A
$$10 \mathrm{~m} / \mathrm{s}$$
B
$$5 \mathrm{~m} / \mathrm{s}$$
C
$$10 / \sqrt{2} \mathrm{~m} / \mathrm{s}$$
D
None
4
VITEEE 2023
MCQ (Single Correct Answer)
+1
-0

A radioactive element $$X$$ convents into another stable element $$Y$$. Half-life of $$X$$ is 2 hrs. Initially only $$X$$ is present. After time $$t$$, the ratio of atoms of $$X$$ and $$Y$$ is found to be $$1: 4$$, then $$t$$ in hours is

A
2
B
4
C
between 4 and 6
D
6
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