Which of the following chips is powered by a battery?
The correct answer is A
The amount of light entering in eye is controlled by:
The ratio of the amplitudes of the electric field and magnetic field strengths has the same dimensions as that of:
Which of the following equations correctly represents the momentum p of a photon of Energy E?
A pulse of light duration 10-5 s is absorbed fully by a little object initially at rest. If the power of this pulse is 45 × 10-3...
An object is placed at a distance of 10 cm in front of a double convex lens made of glass of refractive index 1.5. Both the radii of curvature of the le...
The refractive indices of quartz crystal for right handed and left handed circularly polarized light of wavelength 762.9 nm are 1.5391 and 1.5392 respe...
Which of the following materials is used for the generation of ultrasonic waves by using magnetostriction effect?
A charged particle oscillates about its mean equilibrium position with a frequency of 105 Hz. What is the frequency of the electromagnetic wa...
The radii of curvature of the faces of a double convex lens are 20 cm and 30 cm. If focal length of the lens is 36 cm find the refractive index of t...
