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### A body of mass 1.0 kg is falling with an acceleration of 10 ms⁻².

A body of mass 1.0 kg is falling with an acceleration of 10 ms⁻². Its apparent weight will be (g=10 ms⁻²)

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(a) 1.0 kg wt (b) 2.0 kg wt (c) zero (d) […]

### SI unit of magnetic dipole moment is

SI unit of magnetic dipole moment is

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(a) A m⁻¹ (b) A m² (c) T m A⁻¹ (d) m A⁻²

A m²

Explanation:

The SI unit of magnetic dipole moment is […]

### A force of 10 newton acts on a body of mass 20 kg for 10 seconds. Change in its momentum

A force of 10 newton acts on a body of mass 20 kg for 10 seconds. Change in its momentum is

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(a) 5 kg. ms⁻¹ (b) 200 kg. ms⁻¹ (c) 100 kg. ms⁻¹ […]

### A coil of N turns and mean cross-sectional area A is rotating with uniform angular

A coil of N turns and mean cross-sectional area A is rotating with uniform angular speed ω about an axis at right angle to uniform magnetic field B. The induced e.m.f. E in the coil […]

### A particle of mass m moves with constant speed along a circular path of radius r under

A particle of mass m moves with constant speed along a circular path of radius r under the action of a force F. Its speed is

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(a) √rF/m (b) √F/r (c) √Fmr (d) […]

### One-fourth length of a spring of force constant K is cut away. The force constant

One-fourth length of a spring of force constant K is cut away. The force constant of the remaining spring will be

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(a) 3/4 K (b) 4/3 K (c) K (d) 4K

Correct […]

### The dimensional formula for Boltzmann’s constant is

The dimensional formula for Boltzmann’s constant is

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(a) ML²T⁻²θ⁻¹ (b) ML²T⁻² (c) ML⁰T⁻²θ⁻¹ (d) ML⁻²T⁻¹θ⁻¹

ML²T⁻²θ⁻¹

Explanation:

The Boltzmann constant has the dimension is. energy/temperature.

The same as entropy.

so, the […]

### The inductive reactance of an inductor of 1/π henry at 50 Hz frequency is

The inductive reactance of an inductor of 1/π henry at 50 Hz frequency is

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(a) 5πΩ (b) 50Ω (c) 50πΩ (d) 100Ω

100Ω

Explanation:

No explanation available. Be the first […]

### The ratio of the numerical value of the average velocity and average speed

The ratio of the numerical value of the average velocity and average speed of a body is always

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(a) Unity (b) Unity or less (c) Unity or more (d) Less than unity

### Electric potential at any point is V= -5x +3y + √(15) z. Then the magnitude of electric

Electric potential at any point is V= -5x +3y + √(15) z. Then the magnitude of electric field is

Options

(a) 3 √2 (b) 4 √2 (c) 5 √2 (d) 7