1
MHT CET 2023 9th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A thin rod of length '$$L$$' is bent in the form of a circle. Its mass is '$$M$$'. What force will act on mass '$$m$$' placed at the centre of this circle?

( $$\mathrm{G}=$$ constant of gravitation)

A
zero
B
$$\frac{\mathrm{GMm}}{4 \mathrm{~L}^2 \pi^2}$$
C
$$\frac{4 \pi^2 \mathrm{GMm}}{\mathrm{L}}$$
D
$$\frac{2 \mathrm{GMm}}{\mathrm{L}^2}$$
2
MHT CET 2023 9th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A body weighs $$300 \mathrm{~N}$$ on the surface of the earth. How much will it weigh at a distance $$\frac{R}{2}$$ below the surface of earth? ( $$R \rightarrow$$ Radius of earth)

A
$$300 \mathrm{~N}$$
B
$$250 \mathrm{~N}$$
C
$$200 \mathrm{~N}$$
D
$$150 \mathrm{~N}$$
3
MHT CET 2023 9th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A seconds pendulum is placed in a space laboratory orbiting round the earth at a height '$$3 \mathrm{R}$$' from the earth's surface. The time period of the pendulum will be ( $$R=$$ radius of earth)

A
zero
B
$$\frac{2}{3} \mathrm{~s}$$
C
$$4 \mathrm{~s}$$
D
infinite
4
MHT CET 2022 11th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

A body weighs $$500 \mathrm{~N}$$ on the surface of the earth. At what distance below the surface of the earth it weighs $$250 \mathrm{~N}$$ ? (Radius of earth, $$\mathrm{R}=6400 \mathrm{~km}$$ )

A
6400 km
B
800 km
C
1600 km
D
3200 km
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