Lecturer Physics Test 10 Online Preparation MCQs Past Papers

On which of the following the object size as perceived by eye depends upon?

 In an amplifier maximum voltage gain is obtained when load resistance is equal to:

What is the focal length of a normal eye-lens?

The maximum displacement from the undisturbed position of the medium to the crest top is called:

On making gird potential excessively negative, plate resistance (r_p):

Why an eye is not able to see objects closer than 25 cm?

Which of the following refers to the distance from crest to crest of a wave?

Why a glass plate inside a colourless liquid become invisible?

When a light ray enters form air into water then its wavelength:

A wave that remains in a constant position is called:

What is the cause of mirage in desert areas?

Two thin lenses in contact, produce a combined power of +10 dioptress. When they are 0.25 m apart the power reduced to +6 dioptress. The power of the lens in dioptress are:

The gird is moved closer to the cathode without changing anything. The amplification factor of the value will:

The distance of the eye-lens form the retina is x. For a normal eye, the maximum focal length the eye-lens is:

Image formed by a concave lens is:

The average amount of energy transported by a wave, per unit area per unit time is termed as:

Why danger signals are made red?

The ability of a convex lens to produce convergence in a parallel beam is called its:

The energy transported by a wave is proportional to the square of the______________ of the wave.

On average, there is no energy transfer in:

The temperature co-efficient of resistance of a semi-conductor is:

As the wavelength is increased from violet to red, the luminosity:

When waves go from one place to another, they transport:

A mechanical wave is a disturbance that travels through some material or substance called the ____________ for the wave:

All particles of a wavefront vibrate: