NEET Mock Test - 8 - NEET MCQ

There is a small object at centre C of a solid glass sphere of refractive index μ. When seen from outside, the dot will appear to be located 

A lens behaves as a converging lens in air and a diverging lens in water. The refractive index of the material is  

A quartz slab is placed inside glycerine as shown in the figure. The shift of object observed by observer on left side is : 

The largest distance of the image of a real object from a convex mirror of focal length 20 cm can be  

A hypermetropic person can see the objects beyond 1 m from his eyes. What should be the power of spectacles we should use so that his least distance of clear vision becomes 25 cm  

A simple microscope has a focal length of 2.5 cm. Maximum angular magnification of it will be (Given that least distance of clear vision = D = 25 cm)

A normal human eye can see from 25 cm to infinity. If the distance between eye lens and retina is 2 cm, then which of the following is correct?  

In a compound microscope, the intermediate image is  

Stopping potential in photoelectric experiment for a given metal surface  

When a transistor is used in common emitter mode as an amplifier  

The output of a NAND gate is 0, when  

Q. The resistance of a germanium junction diode whose V−I is shown in the figure is (Vk=0.3V)

In the circuit shown, I₁ and I₂ are respectively 

Input applied to the following circuit will produce which of the following output signal, assuming R₁ = R₂ and  diode is ideal. 

If the ratio of amplitudes of two coherent sources producing an interference pattern is 3 : 4, then ratio of intensities at maxima and minima is  

The ionization potential of hydrogen atom is − 13.6 V. Photons of energy 12.75 eV are made to incident on sample of H atoms at ground state. How many spectral lines are expected in emitted radiation?

Electromagnetic radiations of intensity I is incident normally on a perfectly reflecting surface. If speed of light is C, then radiation pressure exerted on the surface is

A beam of unpolarised light travelling in air is reflected from a solid surface at an angle of reflection 60°. If the reflected light is plane polarized, then refractive index of the solid is

de-Brogile wavelength associated with a proton accelerated from rest by 10 kV is λ. The de-Brogile wavelength associated with a 10 keV neutron is  

Momentum of an alpha particle emitted from a stationary nucleus is. Momentum of the daughter nucleus should be 

Percentage of radioactive sample decayed in 2 half lives is

In a Young’s double-slit experiment, the intensity at a bright fringe is I0. If one of the slits is now covered, the intensity at any point on the screen will be

In a Young’s double-slit experiment, the central bright fringe can be identified  

In a Young’s double-slit experiment, if the slits are of unequal width,

In a Young’s double-slit experiment, the fringe width is β. If the entire arrangement is now placed inside a liquid of refractive index μ, the fringe width will become

In a Young’s double-slit experiment, let S₁ and S₂ be the two slits and C be the centre of the screen. If ∠S₁CS₂ = θ and λ is the wavelength, the fringe width will be  

The penetrating powers of α, β and γ radiations, in decreasing order, are