Explanation

Vocal cords in females are generally shorter and thinner.

These characteristics contribute to the higher pitch of female voices compared to males.

Males vocal cords are longer and thicker.

Explanation

Velocity is measured by a speedometer.

It is a device that measures the rate of change of an object's position with respect to time.

It typically measured in units of distance per unit time.

Such as kilometers per hour (km/h) or miles per hour (mph).

Explanation

The transfer of thermal energy from one substance to another that requires no physical medium is called radiation.

Radiation is the process by which thermal energy (heat) is transferred through electromagnetic waves, such as infrared radiation. 

They can occur in a vacuum, such as in the transfer of heat from the Sun to the Earth.

Unlike conduction and convection, which require a physical medium (solids, liquids, or gases), 

Explanation

A camera uses a convex lens to focus light and form a clear image on the sensor or film.

The convex lens converges light rays to produce a sharp image.

Explanation

• GPS stands for Global Positioning System, a network of satellites orbiting the Earth.
• It provide location information and timing signals to GPS receivers on the ground.

Explanation

In solids, particles mainly exhibit vibrational motion about their fixed positions.

They have limited translational and rotational motion compared to liquids and gases.

Explanation

Homogeneous liquid equilibria can be affected by temperature changes,

It as the temperature can influence the equilibrium position.

Pressure changes may also affect equilibria but to a lesser extent than temperature changes.

Explanation

The efficiency of a Carnot engine is given by 

Efficiency = 1 − 𝑄 rejected /𝑄 accepted

where  𝑄 accepted and  𝑄 rejected is the heat absorbed and rejected, respectively.

Explanation

Polarization is a property of transverse waves, where the direction of vibration can be oriented in various directions.

Ultrasonic waves are longitudinal waves and cannot be polarized.

Explanation

The moment of inertia depends on the mass of the object,

how the mass is distributed relative to the axis of rotation,

and the axis of rotation itself,

but it does not depend on the angular velocity.