1
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1

The restoring force of a spring with a block attached to the free end of the spring is represented by

A
B
C
D
2
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1

An electric lift with a maximum load of 2000 kg (lift + passengers) is moving up with a constant speed of 1.5 ms$$-$$1. The frictional force opposing the motion is 3000 N. The minimum power delivered by the motor to the lift in watts is : (g = 10 ms$$-$$2)

A
23000
B
20000
C
34500
D
23500
3
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1

The energy that will be ideally radiated by a 100 kW transmitter in 1 hour is

A
36 $$\times$$ 107 J
B
36 $$\times$$ 104 J
C
36 $$\times$$ 105 J
D
1 $$\times$$ 105 J
4
NEET 2021
MCQ (Single Correct Answer)
+4
-1
A particle is released from height S from the surface of the Earth. At a certain height its kinetic energy is three times its potential energy. The height from the surface of earth and the speed of the particle at that instant are respectively -
A
$${S \over 4},\sqrt {{{3gS} \over 2}}$$
B
$${S \over 4},{{3gS} \over 2}$$
C
$${S \over 4},{{\sqrt {3gS} } \over 2}$$
D
$${S \over 2},{{\sqrt {3gS} } \over 2}$$
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