1
MHT CET 2021 24th September Evening Shift
+1
-0

The depth from the surface of the earth of radius $$\mathrm{R}$$, at which acceleration due to gravity will be $$60 \%$$ of the value on the earth surface is

A
$$\frac{2 R}{3}$$
B
$$\frac{2 R}{5}$$
C
$$\frac{3 R}{5}$$
D
$$\frac{5 R}{3}$$
2
MHT CET 2021 24th September Evening Shift
+1
-0

Three point masses, each of mass 'm' are kept at the corners of an equilateral triangle of side 'L'. The system rotates about the centre of the triangle without any change in the separation of masses during rotation. The period of rotation is directly proportional to $$\left(\cos 30^{\circ}=\frac{\sqrt{3}}{2}\right)$$

A
L
B
$$\mathrm{L}^{1 / 2}$$
C
$$\mathrm{L}^{3 / 2}$$
D
$$\mathrm{L}^{-2}$$
3
MHT CET 2021 24th September Evening Shift
+1
-0

The length of the seconds pendulum is lm on earth. If the mass and diameter of the planet is 1.5 times that of the earth, the length of the seconds pendulum on the planet will be nearly

A
0.67 m
B
0.45 m
C
0.60 m
D
0.76 m
4
MHT CET 2021 24th September Morning Shift
+1
-0

If the horizontal velocity given to a satellite is greater than critical velocity but less than the escape velocity at the height, then the satellite will

A
be lost in space
B
falls on the earth along parabolic path
C
revolve in circular orbit
D
revolve in elliptical orbit
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