Question
A wall clock uses a vertical spring-mass system to measure the time. Each time the mass reaches an extreme position, the clock advances by a second. The clock gives correct time at the equator. If the clock is taken to the poles it will:
  1. Run slow.
  2. Run fast.
  3. Stop working.
  4. Give correct time.

Answer

  1. Give correct time.

Explanation:

Because the time period of a spring-mass system does not depend on the acceleration due to gravity.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

A charge produces an electric field of 1 N/C at a point distant 0.1 m  from it. The magnitude of charge is

(a) 1.11  

(b) 9.11  

(c) 7.11  

(d) None of these

Through two parallel wires A and B, 10 and 2 ampere of currents are passed respectively in opposite direction. If the wire A is infinitely long and the length of the wire B is 2 m, the force on the conductor B, which is situated at 10 cm distance from A will be

(a) 8  

(a) 8  

(c) 4  

(d) 4π  

A free neutron decays to a proton but a free proton does not decay to a neutron. This is because:
  1. Neutron is a composite particle made of a proton and an electron whereas proton is a fundamental particle.
  2. Neutron is an uncharged particle whereas proton is a charged particle.
  3. Neutron has large rest mass than the proton.
  4. Weak forces can operate in a neutron but not in a proton.

Equivalent resistance between the points A and B is (in W)

(a)   

(b) 1 

(c) 2 

(d) 3 

A wire of length 1 m is moving at a speed of 2ms–1 perpendicular to its length and a homogeneous magnetic field of 0.5 T. The ends of the wire are joined to a circuit of resistance 6 W. The rate at which work is being done to keep the wire moving at constant speed is

(a)  

(b)  

(c)  

(d) 1W

The work done to move a charge along an equipotential from A to B:

A moving coil galvanometer of resistance 100 is used as an ammeter using a resistance 0.1 The maximum deflection current in the galvanometer is 100A. Find the minimum current in the circuit so that the ammeter shows maximum deflection

(a) 100.1 mA

(b) 1000.1 mA

(c) 10.01 mA

(d) 1.01 mA

A solid floats in a liquid in a partially dipped position.
  1. The solid exerts a force equal to its weight on the liquid.
  2. The liquid exerts a force of buoyancy on the solid which is equal to the weight of the solid.
  3. The weight of the displaced liquid equals the weight of the solid.
  4. The weight of the dipped part of the solid is equal to the weight of the displaced liquid.
Huygen's concept of wavelets is useful in:

For photoelectric emission, tungsten requires light of 2300 Å. If light of 1800 Å wavelength is incident then emission

(a) Takes place

(b) Don’t take place

(c) May or may not take place

(d) Depends on frequency