1
KCET 2019
MCQ (Single Correct Answer)
+1
-0

The end product of decay of $${ }_{90} \mathrm{Th}^{232}$$ is $${ }_{82} \mathrm{~Pb}^{208}$$. The number of $$\alpha$$ and $$\beta$$ particles emitted are respectively

A
$$3,3$$
B
$$6,4$$
C
$$6,0$$
D
$$4,6$$
2
KCET 2019
MCQ (Single Correct Answer)
+1
-0

Two protons are kept at a separation of $$10 \mathrm{~nm}$$. Let $$F_n$$ and $$F_e$$ be the nuclear force and the electrostatic force between them

A
$$F_e=F_n$$
B
$$F_e \gg F_n$$
C
$$F_e \ll F_n$$
D
$$F_e$$ and $$F_n$$ differ only slightly
3
KCET 2019
MCQ (Single Correct Answer)
+1
-0

Two particles which are initially at rest move towards each other under the action of their mutual attraction. If their speeds are $$v$$ and $$2 v$$ at any instant, then the speed of centre of mass of the system is

A
$$2v$$
B
zero
C
$$1.5v$$
D
$$v$$
4
KCET 2019
MCQ (Single Correct Answer)
+1
-0

A particle is moving uniformly along a straight line as shown in the figure. During the motion of the particle from $$A$$ to $$B$$, the angular momentum of the particle about $$O$$

KCET 2019 Physics - Rotational Motion Question 5 English

A
increase
B
decrease
C
remains constant
D
first increase then decrease
EXAM MAP